Lock-Jaw Barbell Collars – Lock-Jaw (LJC)
Available in Black, Red, Blue, Pink
Uses: 1" and 2" Weight Lifting Bars

Lock-Jaw Barbell Collars by Avus Design – Lock-Jaw Barbell Collars were designed to be user friendly for both men and women while safely and securely retaining weight plates onto weight bars during use. Lock-Jaw Weightlifting Collars feature a proprietary Patented design that are constructed to integrate with regular barbell bars, dumbbell handles and Olympic bars. Constructed from a solid nylon resin frame and injection molded pressure pads, Lock-Jaw barbell and dumbbell collars are almost unbreakable and will provide you with years of safe dumbbell and barbell workouts. They are compatible with plates with any coating such as painted/baked on enamel, rubber and urethane. What makes Lock-Jaw the best barbell collars? Their one-handed installation and removal via the single-action cam makes weight changes quick and easy which can be especially useful when performing drop set exercises.
Need a quick custom quote or a bulk discount? Call an IRON COMPANY® free weight specialist today at 1-888-758-7527. You can also email quotes@ironcompany.com.
AVAILABLE MODELS:
Lock-Jaw One (LJC-ONE) – The Lock-Jaw ONE collars are specifically for 1" diameter bars and will not work with 2" diameter Olympic bars. Use the Lock-Jaw One with straight bars while performing bench presses and bent over rows. Use them on curl bars and tricep bars for targeting muscles in the arms. The Lock-Jaw One is also great for using with adjustable dumbbell handles when doing chest flyes or one arm rows. The Lock-Jaw One is available in black or pink.
Lock-Jaw Olympic (LJC-OL2) – The Lock-Jaw OLY 2 is where it all began. When deactivated, the release latch expands the inside diameter of the collar to allow the user to easily slide it over the bar sleeve until it is making contact with the weight plates. Once the collar is in position, the user activates the latch and locks the collar on tight. To remove, simply deactivate the latch with one hand and slide off. Each Lock-Jaw Olympic barbell collar contains a series of injection molded pressure pads that provide a firm, non-slip hold that will not scratch your bar.
Lock-Jaw Pro (LJC-PR2) – The Lock-Jaw PRO 2 collar was specifically designed to be used in conjunction with bumper plates during Olympic and CrossFit barbell exercises performed in WODs. The difference between the Lock-Jaw Olympic collar and the Lock-Jaw Pro collar is that the Lock-Jaw Pro incorporates a permanent spring loaded "snap-latch" (seen on the black collars as a red tab) that insures a secure hold and will not come open and lose its grip even from the most brutal bar drops.
Lock-Jaw Pro with Magnets (LJC-PR2-MB) The Lock-Jaw PRO 2 with magnets offers the same high performance and ease of use as the standard PRO 2, but also comes with magnets on both sides of the collars. These magnets allow for a snug fit against metal plates when loaded onto the bar. They also allow the collars to be affixed to benches, racks, and rigs between sets and weight changes, or for easy storage when not in use.
Avalaible Lock-Jaw Collar PAIRS (for individual use):
- LJC-ONE-BLK - One pair of 1" Black Regular Collars for 1" Diameter Handles/Bars ONLY
- LJC-ONE-PNK - One pair of 1" Pink Regular Collars for 1" Diameter Handles/Bars ONLY
- LJC-OL2-BLK - One pair of 2" Black Olympic Barbell Collars
- LJC-OL2-RED - One pair of 2" Red Olympic Barbell Collars
- LJC-OL2-BLU - One pair of 2: Blue Olympic Barbell Collars
- LJC-PR2-BLK - One pair of 2" Black Lock-Jaw Pro Olympic Barbell Collars
- LJC-PR2-RED - One pair of 2" Red Lock-Jaw Pro Olympic Barbell Collars
- LJC-PR2-BLU - One pair of 2" Blue Lock-Jaw Pro Olympic Barbell Collars
- LJC-PR2-PNK - One pair of 2" Pink Lock-Jaw Pro Olympic Barbell Collars
- LJC-PR2-MB - One pair of 2" Black Lock-Jaw Pro Olympic Barbell Collars with Magnets
Available Lock-Jaw Collar BULK SETS (for group fitness and commercial gyms) with 20% PACKAGE SAVINGS:
- LJC-ONE-BLK-BULK - TEN pairs of 1" Black Regular Collars for 1" Diameter Handles/Bars ONLY
- LJC-ONE-PNK-BULK - TEN pairs of 1" Pink Regular Collars for 1" Diameter Handles/Bars ONLY
- LJC-OL2-BLK-BULK - TEN pairs of 2" Black Olympic Barbell Collars
- LJC-OL2-RED-BULK - TEN pairs of 2" Red Olympic Barbell Collars
- LJC-OL2-BLU-BULK - TEN pairs of 2" Blue Olympic Barbell Collars
- LJC-PR2-BLK-BULK - TEN pairs of 2" Black Lock-Jaw Pro Olympic Barbell Collars
- LJC-PR2-RED-BULK - TEN pairs of 2" Red Lock-Jaw Pro Olympic Barbell Collars
- LJC-PR2-BLU-BULK - TEN pairs of 2" Blue Lock-Jaw Pro Olympic Barbell Collars
- LJC-PR2-PNK-BULK - TEN pairs of 2" Pink Lock-Jaw Pro Olympic Barbell Collars
- LJC-PR2-MB-BULK - TEN pairs of 2" Black Lock-Jaw Pro Olympic Barbell Collars with Magnets
FEATURES:
Lock-Jaw One (ONE) Collar Unique Features:
- Recommended For: Home use with adjustable dumbbell handles and barbell bars
- One-hand installation and removal
- Available in black and pink
- Solid nylon resin frame
- Weight: 4 ounces per pair
- Dimensions (each): 2.5" H x 2.5" W x 1.25" D
- 1" inside diameter is ONLY compatible with 1" diameter bars
- 1-Year commercial warranty from defects in material and workmanship
Lock-Jaw Olympic (OL2) Collar Unique Features:
- Recommended For: Garage gyms, fitness studios, school weight rooms, commercial gyms
- One-hand installation and removal
- Available in black, red and blue
- Solid nylon resin frame
- Weight: 13 ounces per pair
- Dimensions (each): 3.0" H x 3.5" W x 2.0" D
- 2" inside diameter is ONLY compatible with 2" diameter Olympic bars
- 1-Year commercial warranty from defects in material and workmanship
Lock-Jaw Pro (PR2) Collar Unique Features:
- Recommended For: Garage gyms, CrossFit boxes, commercial gyms, sports performance, military training
- One-hand installation and removal
- Integrated Spring Loaded Snap-Latch insures collar retains its hold and will not come open during weight drops
- Available in black, red, blue, and pink
- Solid nylon resin frame
- Weight: 13 ounces per pair
- Dimensions (each): 3.0" H x 3.5" W x 2.0" D
- 2" inside diameter is ONLY compatible with 2" diameter Olympic bars
- 1-Year commercial warranty from defects in material and workmanship
Lock-Jaw Pro (PR2-MB) Collar with Magnets Unique Features:
- Recommended For: Garage gyms, CrossFit boxes, commercial gyms, sports performance, military training
- One-hand installation and removal
- Integrated Spring Loaded Snap-Latch insures collar retains its hold and will not come open during weight drops
- Magnets on both sides of collars to attach to racks and benches between sets or when not in use, and to fit snuggly against metal plates when loaded onto bar
- Available in black
- Solid nylon resin frame
- Weight: 13 ounces per pair
- Dimensions (each): 3.0" H x 3.5" W x 2.0" D
- 2" inside diameter is ONLY compatible with 2" diameter Olympic bars
- 1-Year commercial warranty from defects in material and workmanship
WARRANTY:
Customer must provide proof of purchase, description of complaint, the product(s) in question, name, address, phone, and email if available. AVUS DESIGN LLC or agent will only replace or issue credit after receipt of said item(s). This warranty does not apply to unreasonable use or damage.
Lock-Jaw collars should not be used to retain weights for direct overhead lifting, such as "tricep extensions" or "pull overs". Furthermore, Lock-Jaw collars are not designed to hold weight plates in a vertical orientation, where the full weight or the plates bears on the collar only. Lock-Jaw collars should not be used in platform lifting or power-style lifting. This type of use would be considered unreasonable and will void the warranty.
A Lock-Jaw collar thought to be defective, damaged, or not working properly, should NEVER be used as injury may occur. A Lock-Jaw collar that is thought to be damaged should be removed from use immediately so that it cannot be used on fitness equipment. If any Lock-Jaw fails under warranty, contact your place of purchase or AVUS DESIGN LLC at dylan@avusdesign.com.
CARE AND MAINTENANCE:
Your Lock-Jaw collar requires no special maintenance or care. Although it is highly durable, it should be treated with care. You should not drop, throw or crush your Lock-Jaw collar. Rough handling of Lock-Jaw collars will void warranty, shorten their life, and can compromise user safety. If you should notice any of the fasteners on your collar become loose or protrude beyond the surface of the faceplate they MUST BE TIGHTENED IMMEDIATELY using a standard #2 Square-Drive screwdriver.
SHIPPING:
- Ships by UPS Ground
- Shipping cost included within the lower 48 states only
- Additional shipping cost applies to AK, HI, PR