Use Body-Solid's BSTLJ02 OLY 2 Lock Jaw Collars to secure bumper plates in place during even the most strenuous of workouts. Thanks to its unibody design and lever, the BSTLJ02 can be adjusted quickly and easily during workouts. Soft elastomer pads and a premium resin frame helps protect bars and plates from damage during lifting. Body-Solid Tools OLY 2 Lock Jaw Collars are ideal for home and commercial facilities, group and functional fitness classes as well as high schools and universities. DESIGN & DETAILS: Secure weight plates in place Protect bar finish Easy adjustments during workouts Designed for use with all 50mm (2" ) bars Ideal for home, commercial facilities, group and functional fitness & high schools/universities