Locking or fixing olympic Barbell Weight and Plate,KEEP SAFEbarbell collars(sold in pair) Designed to lock the barbell plate or weight.Keep safe for the trainer or people stand by. Our clamps are Perfect for cross-fit workouts,Olympic lifts,overhead press,deadlifts,bench press, or any other workout like strong lifts, powerlifting, weight lifting using 2 inches Olympic Barbell.Fastens to all 2 inch Olympic Barsbarbell clips Fits all Olympic barbell sleeves (2').Our barbell collars are widely used for most cast grip plate ,cast plate, and rubber grip plate ,Perfect for all standard home gyms and professional gym owners.Tested by thousands times to make sure the maximum grip strength and Professional level.Made of hardened nylon resin frames and injection-molded pressure padsExceptional durability .The durable cast body and high-pressure grip pads make our barbell collars clamps virtually indestructibleThe Nylon, Engineering plastic.It will be more durable and harder as time goes on.More using casting and high-pressure processing.You could use them years after years.Install Or Removal within secondsOur 2 inch dumbbell collars are very easy to use with One-hand installation and removal, its very convenience and safe to change the different barbell or dumbbell weights or plates. Even use your tired hand.Wont damage your plates or barsWeight clips have smooth nylon contact surfaces,and a rubberized grip pad interior inside to securely lock on your barbell .no matter how heavy you lift or how long you use it , the collars never Scratch your bars and plates,like axle bar, a training bar, and a standard Olympic bars.Just enjoying your training