OVERVIEWMETAL MUSCLE premium Competition Collars are calibrated and engineered specifically for world class Powerlifting competition standards. This is a professional clamp designed for powerlifting movements, such as the squat, bench press and deadlift. Made from Hard Chrome steel with precision craftsmanship and exactly tolerances. The collars feature a lever locking mechanism and a screw fastening system that’s easy to operate- with a few twists quickly locks the plates in position. A protective inner rubber liner won’t scratch or damage the weight sleeves. Collars add 5 kg to overall weight on bar when in use and is carefully calibrated to within +/-0.15% or 10g for each 2500 gram collar. SOLD IN PAIRS. SPECIFICATIONS LENGTH 120CM WIDTH 94MM HEIGHT 78MM WEIGHT 5KG/PAIR (2500 grams each) HOLE DIAMETER 50MM MATERIAL HARD CHROME SILVER