The Rebel Commercial Olympic Lock-Jaw Collars are designed for use in heavy duty gyms and Cross Fit boxes. Suitable only for Olympic bars, the Lock-Jaw Collars firmly and quickly secure discs into place. The collars are engineered to ensure the heaviest of loads will not slip or move even during heavy deadlift exercises. The Lock Jaw Collars are engineered using a black gloss, hardened-nylon frame and injection-moulded pressure pads. The large safety latch ensures the collars are quick and easy to put on and remove from the bar. The latch is easily released with one hand when changing weights. The Rebel Commercial Olympic Lock Jaw Collars are designed to be used with any of the 5 Core Primal Strength bars and have been designed for use in any sports facility, commercial gym, PT studio or home. The collars have a full commercial 2-year warranty; the warranty is only valid if the collars haven’t been damaged due to negligent or faulty use, or handling by the user. Features: Quick-Release Lock-Jaw Olympic Collars Designed for Use in Heavy Duty Gyms or Cross Fit Boxes Safety Latch to Secure Collars in Place Stronger Grip than Spring Collars 2-Year Commercial Warranty Specification: Material: Hardened Plastic SPECIFICATION: Brand Primal Strength Usage Home Use, Commercial Use Condition Brand New Warranty Full Commercial 1-Year.