Locking olympic bar collars are specially designed for olympic lifting and Crossfit WODs. Sold as a pair, the collars feature a solid-core nylon resin frame and injection molded pressure pads which make them extremely durable. The single-action cam lock makes it easy to quickly put on and take off the bar. The permanent spring snap-latch keeps the collar secure - even through countless drops. Fits 2" Olympic size bars.