About This GENUINE LOACK-JAW BARBELL COLLAR UNMATCHED DURABILITY - Advanced Composite Reinforced Resin Construction - Strongest, most durable collar available on the market UNRIVALED HOLDING POWER - No rattling or sliding plates. Barbell clips will secure your plates together set after set, drop after drop m bars and all lifts FAST, EASY LOCK AND UNLOCK - Effortlessly clamp and remove with one hand using the over-sized latch DESIGNED FOR ALL LIFTS - Bumper Plates, Olympic-Style, Deadlifts, Bench Press, Powerlifts, Clean and Jerks, Overhead Press, HIIT, Training, and Powerlifting FITS BOTH 2" AND 50mm BARS - The two most popular Barbell sizes including Olympic barbells QUICK CHANGE WEIGHTS - Quick release lever makes it a snap to swap out weights Overview Material : Advanced Composite Resin Brand : Lock-Jaw Barbell Collars Item dimensions L x W x H : 7 x 3 x 2 inches Color : Black Style : Modern Tensile Strength : 45 Pounds UPC : 750253235819 Manufacturer : Lock-Jaw Barbell Collars