LIFT Fitness Solutions Quick Release Locking Olympic Barbell Collar Set for 2-inch Weights Bar Designed for handling serious weight; dual-locking technology ensures a tight, secure clamp Built of nearly indestructible ABS plastic for durability; rubber pads provide increased grip Works with any 2-inch Olympic-size barbell, EZ curl bar or dumbbell bar Perfect for bodybuilding, CrossFit, circuits, P90X, pyramid training, drop-sets, super-sets and more Storage pouch included; bring to the gym, easy storage, never lose track of your collars