Lock-Jaw Barbell Collars

Composite/resin collars (PRO, OLYMPIC, Sport, ONE) are lighter, more affordable, and available in the widest range of colors. Metal collars (Flex Metal, Metal, Solid Metal) are heavier, built from aircraft aluminum, and hold up to the most demanding daily commercial use.

Both collar types deliver the same core promise — more clamping force than a standard spring collar — but they trade off differently. Composite/resin collars use a durable resin frame with elastomer pads, keeping unit weight low (as little as 0.25 lbs for the ONE) while still holding through heavy lifts. They're the better fit for most home gyms and general commercial use, and they come in far more color options — useful for matching a facility's branding.

Metal collars step up to aircraft aluminum construction, adding weight and durability at a small premium. They're built for facilities running collars through daily heavy use across many lifters — CrossFit boxes, university weight rooms — where the added durability pays off over years of use. Our best-selling composite pick is the PRO Barbell Collars; our best-selling metal pick is the Flex Metal Barbell Collars with Magnets.

Lock-Jaw collars fit three bar diameters: 1" bars (the ONE collar), 1.9" specialty bars (the PRO AXLE, for farmers carry handles, axle bars, and log bars), and 2" Olympic bars (every other collar in the lineup).

Most lifters use 2" Olympic bars, which is why most of the Lock-Jaw lineup — PRO, PRO with Magnets, OLYMPIC, Flex Metal, Metal, Sport, and Solid Metal — is built for that standard. If your gym runs smaller 1" diameter bars (common on older or budget equipment), the ONE collar is purpose-built for that size rather than a downsized 2" collar. If you're using specialty strongman-style equipment — farmers carry handles, axle bars, log bars — the PRO AXLE is sized specifically for 1.9" bars, which a standard Olympic collar won't seat correctly on.

The PRO, PRO with Magnets, PRO AXLE, and Flex Metal collars use a larger lever with a spring-loaded snap latch for maximum leverage. The OLYMPIC, Metal, and Sport collars use a simpler quick-lock action — press to engage, no lever to flip — for faster operation during frequent load changes.

Both mechanisms deliver more clamping force than a standard spring collar and both are one-handed, hassle-free designs. The lever-latch collars trade a touch of speed for extra leverage and holding power, making them a common pick for heavy compound lifts. The quick-lock collars trade some of that extra leverage for faster on/off cycles, which matters more in circuit training or facilities changing loads constantly throughout the day. Neither is objectively better — it's a speed-vs-leverage tradeoff based on how you train.

The PRO with Magnets, Flex Metal with Magnets, and Metal Barbell Collars all have magnets built into both flat faces, letting you park them on any steel rack or rig between sets.

The magnets are a storage convenience, not part of the locking mechanism itself — they simply let a collar stick to a squat rack upright, rig crossbar, or weight tree regardless of which side faces the rack, keeping collars organized and off the floor. If magnetic storage matters to you, look for "with Magnets" in the product name, or the Metal Barbell Collars, which include magnets without it being called out in the title.

Unit weight ranges from 0.25 lbs (ONE collar, for 1" bars) up to 0.85 lbs (Solid Metal "The Machine" collar) per collar. Heavier collars generally mean more durable metal construction; lighter collars are typically composite resin.

Collar weight itself has minimal effect on your lift — it's a rounding error compared to the plates you're loading. What weight really signals is construction: the lightest collars in the lineup (ONE at 0.25 lbs, Sport at 0.7 lbs) are composite resin, while the heaviest (Solid Metal at 0.85 lbs, Flex Metal at 0.75 lbs) are aircraft aluminum. If you want the most durable option for high-volume commercial use, the heavier metal collars are built for that; if minimizing added mass on your bar setup matters, the lighter composite options get the job done without the weight.

Lock-Jaw collars are built to commercial-grade standards, but that doesn't mean they're overkill for a home gym — the PRO and OLYMPIC collars are Lock-Jaw's most accessible price points and hold up just as well to home training as they do to a commercial facility.

Every Lock-Jaw collar carries the same commercial-grade construction standard and 1-year warranty, whether it's installed in a university weight room or a garage gym. The difference between collars in the lineup isn't home-vs-commercial — it's material (composite vs metal) and mechanism (lever-latch vs quick-lock). A serious home lifter benefits from the same clamping-force advantage over a spring collar that a commercial facility does; you're simply choosing based on budget, color preference, and whether you want the extra durability of a metal collar for years of consistent use.

Color options vary by collar, from 2 up to 9 — the Sport Collars offer the widest range in the lineup at 9 colors, while the Solid Metal "The Machine" collar ships in 2 standout options.

If color choice matters for your facility branding or personal preference, the Sport Collars (9 colors) and the Flex Metal with Magnets (5 colors, including gold and silver) give you the most to choose from. Most of the lineup sits in the 3-5 color range. Check each product page for the exact current color lineup, since options can vary by collar generation.

Every Lock-Jaw collar is sold as a pair — one order equips one full barbell with a collar on each end.

If you're outfitting multiple bars for a facility, order one set per barbell. There's no need to double up on individual orders — the listed price already reflects both collars.

Lock-Jaw collars range from $18.99 (ONE, for 1" bars) up to $59.99 (Flex Metal with Magnets and Solid Metal "The Machine"), with most 2" Olympic collars falling between $37.99 and $51.99.

Price generally tracks material and features: composite/resin collars at the accessible end (OLYMPIC at $37.99, PRO at $41.99), the same PRO frame with added magnets stepping up to $51.99, and the premium metal collars at the top of the range. If budget is the primary factor, the OLYMPIC or ONE collars deliver Lock-Jaw's core clamping-force advantage at the lowest price points in the lineup.

Yes — every Lock-Jaw collar carries a 1-year manufacturer warranty against defects in material or workmanship.

As an authorized Lock-Jaw dealer, Blue Sky Fitness Supply handles warranty claims on your behalf — you're not chasing the manufacturer directly. The full warranty coverage and exclusion details are available on our warranty information page under the Lock-Jaw section.

Orders process within 3 business days and typically arrive within 3-5 business days of shipment.

Lock-Jaw collars are small parcel items, so there's no freight or liftgate to schedule — they ship the same way as any small package. For facility buyers ordering collars alongside racks, bars, or plates, we can bundle the order onto one purchase order so there's a single document to process. Full shipping details, including current rates, are on our shipping policy page under the Lock-Jaw section.

Lock-Jaw is designed and manufactured in the USA by Avus Design, a California-based company focused on barbell collar design and clamping technology.

Lock-Jaw's collars are used in universities, professional sports weight rooms, gyms, and high schools — environments that demand reliability under constant, heavy daily use. The Solid Metal collar line was developed in conjunction with powerlifting strongman Leroy \"The Machine\" Walker, reflecting the brand's focus on maximum clamping force for serious lifters. As an authorized Blue Sky dealer product, every Lock-Jaw collar you buy from us is backed by the manufacturer's 1-year warranty.