Proloc™ Collars

Name: Proloc™ Collars
Brand: Rogue Fitness
Rating: 4.33 (6 reviews)

Rogue’s Proloc Collars are a universal locking collar built to fit virtually any barbell sleeve, from standard Olympic bars down to specialty bars like logs, cambered bars, Swiss bars, and safety squat yoke bars. Instead of a fixed-diameter lever or spring mechanism, each collar uses a hand-adjustable screw-top knob that presses a cylindrical bit directly onto the sleeve, letting one pair of collars grip anything from 1.937” to 2.007” in diameter — a range that covers both Olympic and axle-sized sleeves.

That adjustability is the whole selling point relative to fixed-size collars like Rogue’s own HG 2.0 or OSO collars, which require buying a separate set per bar diameter. Garage Gym Lab rates them 9.5/10 overall, highlighting near-perfect versatility (9.9/10) and strong build quality, and long-term owners on r/homegym report units still holding securely after five or more years of regular use. The tradeoff is speed: the spin-to-tighten screw takes longer to put on and off than a lever-style collar, and a handful of reviewers note the hold can loosen slightly under very heavy deadlift loads compared to premium aluminum lever collars.

Color	black (also available in red)
Made in	USA
Sold as	pair
Material	1.75" thick nylon plastic
Warranty	2-year coverage for material defects and workmanship
Mechanism	hand-adjustable screw-top knob pressing a cylindrical bit onto the sleeve
Compatible equipment	Olympic bars, powerlifting bars, logs, cambered bars, Swiss bars, safety squat yoke bars
Diameter compatibility	1.937" to 2.007" sleeves (fits both Olympic and axle-sized bars)

What is a Collar?

What barbell collars are

Collars (clips) lock the plates onto a barbell’s sleeves so they can’t slide or rattle off — a safety essential, especially for pressing and Olympic lifts. The common types: cheap spring clips, quick lock-jaw / quick-release collars (the everyday favorite — fast and secure), and competition collars (precision-weighted, 2.5 kg each, for calibrated meets).

What to look for

A secure clamp that won’t creep under drops or high reps, quick on-and-off operation, and a fit for your bar’s sleeve diameter (standard Olympic is 50 mm). For most home gyms, a pair of lock-jaw-style collars is the right balance of speed, grip, and price.

How it compares

	Proloc™ Collars	TwistLock® Barbell Collars	Hex Lock Olympic Collars	York Vintage leather lined collars for Olympic EZ Curl Bar
GymRadar rating	4.33/5	4.33/5	4.33/5	4.27/5
Price	$51.45	$49.97
Color	black (also available in red)
Made in	USA
Sold as	pair
Material	1.75" thick nylon plastic
Warranty	2-year coverage for material defects and workmanship
Mechanism	hand-adjustable screw-top knob pressing a cylindrical bit onto the sleeve
Compatible equipment	Olympic bars, powerlifting bars, logs, cambered bars, Swiss bars, safety squat yoke bars
Diameter compatibility	1.937" to 2.007" sleeves (fits both Olympic and axle-sized bars)

4.3/5 · 6 GymRadar reviews

Reviews by source

Expert	4.33/5	6 reviews
Retailer	4.6/5	44 reviews
Youtube	4.5/5	2 reviews
Reddit	4.3/5	5 reviews

Proloc Collars earn their reputation as the most versatile locking collar on the market: a single screw-top pair fits everything from Olympic sleeves down to 1.9” specialty bars (axles, Swiss bars, safety squat bars), which independent reviewers and long-term owners alike confirm holds securely for years. Build quality and durability are the standout dimensions — Garage Gym Lab scores them 9.5/10 for build and owners on r/homegym report units still going strong after 5+ years of use. The weakest dimension is ease of use: the spin-to-tighten thumb screw is slower than a lever-style collar, and a few reviewers note they can loosen slightly under heavy deadlift loads compared to premium aluminum lever collars.

+Versatility: fits any bar diameter from 1.937" to 2.007" with one universal collar, including Olympic, powerlifting, log, cambered, Swiss, and safety squat bars (Rogue product page)
+Durability: owners report units still holding securely after 5+ years of regular use (r/homegym)
+Build quality: 1.75" thick nylon construction rated 9.5/10 for build quality by Garage Gym Lab, made in the USA with a 2-year warranty
+Functionality: tested to hold four 45-lb plates stacked vertically without slipping (Garage Gym Lab)
+Value: competitively priced at $42-$51 relative to fixed-diameter competitors like OSO and Lockjaw, which require separate purchases per sleeve size (Garage Gym Lab, r/homegym)

−Ease of use: spin-to-tighten thumb screw is noticeably slower to put on and off than lever-style collars (r/homegym, Garage Gym Lab)
−Functionality: some reviewers report plates moving on heavy deadlifts, requiring mid-session re-tightening (Rogue on-site reviews)
−Versatility: less reliable during fast Olympic weightlifting movements compared to purpose-built oly collars (Garage Gym Lab)
−Build quality: the metal clamping cylinder can lightly mar bar sleeves over time (Rogue on-site reviews)

$51.45

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