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Lock-Jaw Flex Metal Barbell Collars with Magnets - for 2" bars

Sale price $5999 Regular price $6299

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Description

The Flex Metal Barbell Collars are Lock-Jaw's best-selling metal collar, built around a premium-grade aircraft aluminum body for maximum clamp force on Olympic-sized bars. A hassle-free locking mechanism keeps plates secured through the heaviest training sessions, while magnets on both sides give lifters a clean place to store the collars on a rack between sets. Sold as a pair, these collars combine metal-frame durability with the quick-release convenience lifters expect from Lock-Jaw. Key features include:

  • 0.75 lbs unit weight
  • 3.5"L × 3.5"W × 2"H
  • 2" Olympic bar size
  • Aircraft aluminum, rubber & composite resin construction
  • Quick-lock lever mechanism
  • Magnetic storage on both sides
  • 5x color options
  • Commercial grade
  • Made in the USA
  • 1-year warranty

Specifications

  • Make
    Lock-Jaw
  • Model
    Flex Metal
  • SKU
    FM
  • Grade
    Commercial
  • Availability
    In stock
  • Weight
    0.75 lb.
  • Size
    3.5" x 3.5" x 2"
  • Locking Design
    Yes
  • Magnetic Storage
    Included
  • Bar Diameter
    2" / 50 mm
  • Colors
    Black, Blue, Red, Gray
  • Warranty
    1 Year

Reviews

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Summary

Engineered for heavy-duty, commercial use, Lock-Jaw's best-selling metal collar is the ultimate in durability, functionality, and convenience. Built from aircraft aluminum rather than the composite resin used on most of the Lock-Jaw lineup, these collars deliver unmatched clamp force via the same quick-lock lever mechanism as the PRO line — just housed in a heavier, more rigid metal frame that holds up to constant on/off cycles in the busiest commercial facilities. Storage magnets on both flat faces offer a sleek, practical way to park collars on any steel rack or rig between workouts.

With five color options (including gold and silver) and a hassle-free locking mechanism, these collars combine style, simplicity, and superior performance at a unit weight of 0.75 lbs per collar. Made in the USA, backed by a 1-year warranty, they're Lock-Jaw's top-tier choice for facilities and lifters who demand daily-use durability and premium finish options. Sold as a pair and in-stock, these collars are ready to take your training to the next level.

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Collar Comparison

A table comparing the facets of 5 products
Facet
A pair of Lock-Jaw PRO Barbell Collars for 2" bars in black and red, featuring locking levers, commercial-grade quality, designed to secure weight plates during weightlifting.
Best Selling Collars Best Seller
View detailsView
A pair of red and black Lock-Jaw metal barbell collars with visible branding and magnets on the inside.
Best Selling Metal Collars Best Seller
View detailsView
Make
Make
Lock-Jaw
Lock-Jaw
Lock-Jaw
Lock-Jaw
Lock-Jaw
Model
Model
Sport
OLYMPIC
PRO Magnet
Flex Metal
The Machine
Price
Price
Sale priceFrom $2199 Regular price $2495
Sale price $3799 Regular price $3999
Sale price $4199 Regular price $4499
Sale price $5999 Regular price $6299
Sale price $5999 Regular price $6999
Grade
Grade
Commercial
Commercial
Commercial
Commercial
Commercial
Material
Material
Composite Resin, Rubber
Composite Resin, Rubber
Composite Resin, Rubber
Aircraft Aluminum, Rubber, Composite Resin
Aircraft Aluminum
Locking Design
Locking Design
Yes
No
Yes
Yes
Yes
Magnetic Storage
Magnetic Storage
None
None
None
Included
None
Bar Diameter
Bar Diameter
2" / 50 mm
2" / 50 mm
2" / 50 mm
2" / 50 mm
2" / 50 mm
Colors
Colors
Nine (9)
Three (3)
Five (5)
Four (4)
Two (2)

Frequently Asked Questions

Barbell Collar Questions

It's built from premium-grade aircraft aluminum instead of resin, giving it a heavier, more durable frame for daily commercial use.


Where the PRO, OLYMPIC, and Sport collars use a composite resin frame, the Flex Metal steps up to aircraft aluminum construction — the same category of material used in Lock-Jaw's other metal collars. This adds weight and durability at a modest price premium, making it the pick for facilities running collars through the heaviest, most frequent daily use. It still uses rubber and composite resin at the contact points to protect your bar's finish.

  • Aircraft aluminum frame vs resin on most Lock-Jaw collars
  • Built for heaviest, most frequent daily commercial use
  • Rubber & composite resin contact points protect bar finish
  • Lock-Jaw's best-selling metal collar

Yes — a hassle-free quick-lock lever mechanism, similar in concept to the PRO's design but built into the metal frame.


The Flex Metal keeps Lock-Jaw's signature lever-based locking action, just housed in an aluminum body instead of resin. This means the same fast one-handed install/removal you'd get from the PRO collar, but with the added mass and rigidity of a metal frame — useful in facilities where collars get swapped between bars dozens of times a day.

  • Quick-lock lever mechanism, same family as the PRO design
  • One-handed install and removal
  • Metal frame adds rigidity vs resin collars
  • Holds securely through the heaviest training sessions

Magnets on both sides let you park the collar directly on a steel rack or rig between sets, keeping it off the floor.


Like Lock-Jaw's other magnet-equipped collars, the Flex Metal has magnets built into both flat faces so it sticks to a squat rack upright, rig crossbar, or weight tree regardless of orientation. This is a storage convenience separate from the locking mechanism itself.

  • Magnets on both sides for rack/rig storage
  • Sticks to any steel surface regardless of orientation
  • Keeps collars organized and off the floor
  • Separate from the lever-based locking mechanism

Standard 2" Olympic barbell sleeves. Sold as a pair, in 5 color options including gold and silver.


The Flex Metal is sized for the standard 2" (50mm) Olympic sleeve, same as most of the Lock-Jaw lineup. It's available in a wider color range than most collars in the line — black, blue, red, silver, and gold — giving facilities more options to match branding or simply stand out on the rack.

  • Fits standard 2" Olympic bar sleeves
  • Sold as a pair — equips one barbell
  • 5x color options: black, blue, red, silver, gold
  • Unit weight: 0.75 lbs per collar

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 1-year term covers manufacturing defects in the locking mechanism, frame, and finish under normal training use. Full coverage and exclusion details are on our warranty information page under the Lock-Jaw section.

  • 1-year manufacturer warranty on every Lock-Jaw collar
  • Covers defects in material or workmanship
  • Blue Sky files the claim on your behalf as authorized dealer
  • Full terms: blueskyfitsupply.com/pages/warranty-information

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.

  • Processes within 3 business days
  • Transit time: 3-5 business days after shipment
  • Small-parcel item — no freight/liftgate scheduling needed
  • Can bundle with a larger equipment order on one PO
  • Full rates on our shipping policy page

Contact us within 30 days of placing your order to request a return. Requests made outside that window may not be approved.


Blue Sky Fitness Supply requests that customers who wish to return purchased goods for any reason reach out within 30 days of placing their order. This gives you a full month to try the collars in your training before the return window closes. Full return and refund policy details are on our return and refund policy page under the Lock-Jaw section.

  • 30-day return request window from order date
  • Requests outside 30 days may not be approved
  • Contact Blue Sky directly to start a return
  • Full terms: blueskyfitsupply.com/pages/return-and-refund-policy

Lock-Jaw collars are 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.

  • Designed & manufactured in the USA by Avus Design (California)
  • Used in universities, pro weight rooms, gyms & high schools
  • Solid Metal line developed with strongman Leroy "The Machine" Walker
  • Every collar backed by a 1-year manufacturer warranty

What Separates Lock-Jaw

  • Strength In Simplicity

    Engineered with an effortless locking mechanism, Lock-Jaw collars combine ease of use & exceptional reliability to keep your workouts running smoothly.

  • Use It & Abuse It

    Crafted from premium aluminum & advanced composite resins, Lock-Jaw collars are built to withstand heavy daily use & the wear and tear of intense training sessions in any environment.

  • American Company

    Designed & manufactured in the USA by Avus Design, a California-based company committed to quality & innovation.

  • Safety First

    With industry-leading clamp force, these collars lock plates securely in place, providing the confidence you need for safe, focused Olympic lifting, power lifting, Crossfit, or any other kind of workout.

  • For Every Budget

    A perfect blend of durability, performance & affordability, the various models by Lock-Jaw provide options for any space or any budget.

  • Constantly Evolving

    Driven by innovation, Lock-Jaw products continually set the standard for functionality, durability & cutting-edge design.

  • Countless Colors

    Lock-Jaw offers plenty of color options to match any brand or school logo, perfect when that little splash of color can make all the difference in a space.