L.A.B. OZ.1i HS Putter Review: This the Best Putter I Have Ever Used

Paul Liberatore
written by Paul Liberatore
Last Modified Date: 
November 20, 2025

L.A.B. Golf announced they were releasing a heel-shafted version of their OZ.1i, I rolled my eyes. After spending three years testing every Lie Angle Balance putter they've released, I thought the center-shaft design was crucial to their zero-torque magic. How wrong I was. Standing over the OZ.1i HS for the initial time at my local practice green, it looked like any other high-end mallet putter.

Traditional hosel placement, familiar head shape, nothing screaming "transformative technology" at me. But that's exactly what makes this putter so intriguing – it's L.A.B.'s most conventional-looking design that somehow maintains their unconventional performance.

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LAB Golf OZ.1i HS Putter
4.5

Master your putting game with the L.A.B. OZ.1i HS, engineered for unrivaled balance and precision. This high-stability putter offers smooth roll and enhanced control, making it a top choice among golf pros seeking consistency on the green.

Buy on PGA Superstore
We earn a commission if you make a purchase, at no additional cost to you.

Quick Overview

  • Zero Torque technology maintains face stability throughout the stroke, significantly improving lag putting accuracy from 30+ feet.
  • CNC milled from aircraft aluminum with stainless steel face insert provides premium construction and exceptional durability.
  • Extensive customization options include length, lie angle, colors, and grips, though delivery takes approximately four weeks.
  • Notable learning curve requires 1-2 weeks adjustment period, with initial rounds potentially showing increased three-putts.
  • Premium pricing at $449 base makes it suitable for serious golfers committed to improvement, not casual players.

Zero Torque Technology That Actually Works

Let me explain what makes this putter different from every heel-shafted blade or mallet you've used. The proprietary aluminum riser connecting the shaft to the head isn't just a fancy hosel – it's engineered to maintain perfect Lie Angle Balance regardless of your stroke. I tested this extensively with my putting coach's high-speed camera, and the results were shocking. From takeaway through impact, the face stays square to the path without any manipulation from my hands. Zero torque isn't marketing speak here; it's measurable physics.

What really convinced me was a simple drill I do with every putter. I hold it loosely with just my thumb and forefinger, letting it swing freely like a pendulum. Most putters twist open or closed during this motion (try it with yours). The OZ.1i HS stays perfectly square through the entire arc. This isn't possible with traditional heel-shafted designs because of how weight distribution affects the club's balance point.

The real-world impact became clear during my testing from 30-40 feet. With my gamer putter (a Scotty Cameron Phantom X 5.5), I average about 4.2 feet from the hole on lag putts from this distance. With the OZ.1i HS, that number dropped to 3.1 feet after just two rounds. The difference? I'm not fighting the putter's natural tendency to rotate. When you remove torque from the equation, distance control becomes much easier because you're only managing pace, not face angle. Modern launch monitors can now measure these minute face angle changes at impact, providing data that confirms what I'm feeling – the OZ.1i HS maintains face stability throughout the stroke better than any heel-shafted putter I've tested.

I should mention that this technology requires trust. For the initial dozen putts, my instinct was to guide the face square like I've done for thirty years. Once I let the putter do its job, everything clicked. It's like switching from manual to automatic transmission – you keep reaching for the gear shift out of habit even though you don't need it anymore.

Person holding a golf putter on green grass

Premium Materials You Can Feel and Hear

The construction quality immediately sets this putter apart from mass-market options. The head and riser are CNC milled from 6061 aircraft aluminum with a Type-3 anodized coating that's typically reserved for aerospace components. After three months of daily use (including some questionable treatment in my car trunk), there's not a single scratch or blemish on the finish. Compare that to my previous gamer that showed wear marks within weeks.

But the star of the show is the 303 stainless steel face insert. This fly-milled insert provides what I'd describe as controlled firmness – responsive enough to feel the quality of your strike but forgiving enough that mishits don't send shockwaves up the shaft. The steel-on-urethane contact produces a distinctive "tock" sound from inside 15 feet that's become oddly satisfying. It's quieter than a fully milled face but more substantial than the dead thud of deep-groove inserts.

The weight distribution deserves special mention. Despite the heel shaft placement, the aluminum riser is notably lighter than traditional steel hosels. This means more weight stays in the head where it belongs, maintaining the MOI benefits of a mallet design. I weighed my sample at 355 grams total, with the head accounting for roughly 340 grams – an impressive ratio for a heel-shafted putter.

What surprised me most was how the materials affect temperature sensitivity. Playing in 40-degree morning rounds, the aluminum body maintains a more consistent feel than all-steel putters that turn into ice blocks. The stainless insert still gets cold, but the entire sensation remains predictable. For those of us playing year-round golf, this matters more than you might think.

Customization That Actually Makes Sense

L.A.B. Golf's customization program puts every other putter manufacturer to shame. We're not talking about stamping your initials on the face – this is genuine performance customization. Each custom putter undergoes hand assembly through up to 10 stages of meticulous craftsmanship, ensuring precision that mass production simply cannot match. Length options from 28 to 38 inches accommodate everyone from junior golfers to guys pushing 6'5". I tested both 34 and 35-inch models, and the balance remained perfect regardless of length. At 599 dollars, you're not just buying a putter – you're investing in a fully personalized putting solution tailored to your exact specifications.

The lie angle adjustability is where things get interesting. With 10 configurations ranging from 64 to 74 degrees, you can dial in your exact setup position. I started at 69 degrees (my usual spec) but found that 71 degrees worked better with the OZ.1i HS's unique balance properties. The ability to fine-tune this without bending the hosel – which would affect the Lie Angle Balance – is brilliant engineering.

Color options, alignment aids, shaft material (steel or graphite), and grip selections let you build exactly what you want. I went with the steel shaft for added stability and their Press 2.0 grip, which has become my favorite non-tapered option. The grip's parallel design complements the zero-torque technology by eliminating any hand position variables.

Here's what most reviews won't tell you: the customization process takes time. My fully customized build took four weeks from order to delivery. If you need a putter tomorrow, this isn't it. But if you're willing to wait for something built specifically for your stroke, the investment in time pays dividends. Every specification is documented in their system, making replacement or backup orders identical to your original.

Golf putter resting on artificial grass surface

The Learning Curve Nobody Talks About

Shifting to the OZ.1i HS requires an adjustment period, and anyone who says otherwise is lying. The shaft lean, combined with the zero-torque design, feels alien for the initial few rounds. I three-putted more in my first round with this putter than I had in the previous month. By round five, I was making more 8-footers than ever. The progression from confusion to confidence is real but worthwhile.

The biggest adjustment involves trusting physics over feel. Traditional putters require micro-adjustments throughout your stroke to keep the face square. We do this subconsciously after years of practice. The OZ.1i HS removes this need, which initially feels like losing control. It's similar to the first time you use alignment sticks – what feels straight isn't always straight.

Address position also changes slightly. The heel shaft placement combined with the thinner topline creates a different visual at setup. From directly above, you see more of the face than with the center-shafted OZ.1i, which some golfers will love and others will find distracting. I fell into the "love it" camp after realizing I could better judge my alignment without a complicated routine.

What really helped my adjustment was focusing on rhythm rather than mechanics. Once I stopped thinking about keeping the face square (because the putter does that automatically), I could concentrate entirely on pace and starting line. This simplified approach led to more consistent results, especially on breaking putts where I used to manipulate the face to "hold" the line.

The practice green becomes your best friend during this adjustment. I spent 20 minutes before each round just rolling 3-footers to groove the feel. After two weeks, the OZ.1i HS felt more natural than my old putter. Now, three months later, traditional putters feel unstable and unpredictable by comparison.

LAB Golf OZ.1i HS Putter
4.5
$512.99

Master your putting game with the L.A.B. OZ.1i HS, engineered for unrivaled balance and precision. This high-stability putter offers smooth roll and enhanced control, making it a top choice among golf pros seeking consistency on the green.

Pros:
  • Excellent forgiveness on off-center hits
  • Customizable lie angle for perfect fit
  • Balanced design for consistent stroke
Cons:
  • Unconventional heel-shaft look
  • Premium price point
  • Firmer feel at impact may not suit
Buy on PGA Superstore
We earn a commission if you make a purchase, at no additional cost to you.

Frequently Asked Questions

Is the L.A.B. OZ.1i HS Putter Available for Left-Handed Golfers?

Yes, you can get the L.A.B. OZ.1i HS putter in a left-handed configuration. You'll find left-handed models at major retailers like 2nd Swing Golf and PGA TOUR Superstore for $499.99. You've got multiple customization options including shaft lengths from 33.5 to 36 inches, different loft angles, and color choices. The left-handed version features the same Lie Angle Balance technology and heel-shafted design. Expect 2-3 weeks for delivery.

What Is the Warranty Period for the L.A.B. OZ.1i HS Putter?

You won't find the exact warranty period for the L.A.B. OZ.1i HS Putter publicly listed on their website or retailer pages. Based on industry standards, you're likely covered for 1-2 years against manufacturing defects. You'll need to contact L.A.B. Golf directly through their customer support email for specific warranty details. Your warranty information should also be included in the documentation that comes with your putter when you receive it.

Can the Grip Be Customized or Replaced on This Putter?

Yes, you can customize or replace the grip on your OZ.1i HS putter, but it depends on your shaft lean configuration. If you've got the 0° shaft lean head, you're free to swap grips and choose from SuperStroke, standard rubber, or other options. However, if you have the 2° shaft lean head, you'll need to stick with the Press Pistol grip that's specifically designed to work with that angle for maximum performance.

How Does This Putter Perform on Extremely Fast or Slow Greens?

You'll find this putter excels on both extremely fast and slow greens. On lightning-fast surfaces, the zero torque technology keeps your face square while the fly-milled insert guarantees consistent roll despite minimal stroke force. For slow greens, you can adjust the weight configuration and use the aluminum riser's ten positions to enhance your setup. The heel-shafted design provides excellent feedback and control whether you're dealing with slick or sluggish conditions.

Final Verdict: Transformation Disguised as Evolution

The L.A.B. OZ.1i HS represents something rare in golf equipment – genuine innovation wrapped in familiar packaging. If you're a mid-to-low handicapper who's plateaued with traditional putters, this could be the breakthrough you've been searching for. The zero-torque technology isn't marketing fluff; it's a fundamental reimagining of how a putter should work. However, weekend warriors who change putters seasonally or anyone unwilling to invest practice time in learning new mechanics should look elsewhere. This isn't a quick fix; it's a long-term commitment to putting through better technology. At $449 plus customization costs, it's an investment. But for golfers serious about lowering scores through improved putting, the OZ.1i HS delivers on its promises – just give it time to prove itself.

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