Durability and performance designed for the most demanding facilities. From one of the most trusted names in strength training comes the next evolution barbell collars. The Lock-Jaw Pro2 features all of the same great performance users expect from the Lock-Jaw name, together with an upgraded design for enhanced performance and hold. A spring-loaded latch provides 50% greater holding force than previous models, which eliminates wasted time resetting collars. The Pro2's molded composite material performs with the durability of steel, at a price that allows you to outfit your whole weight room. Interior elastomer pads were added to create a bearing surface between the bar sleeve and collar, protecting your bar from scratches and damage.