Strong, beautiful collars in chromed metal. Designed for professional powerlifting competitions. IPF certified. * Fast loading with turn screw * Protective inner sheet – gentle on equipment * Smart rubber inset prevents collar from “locking up” * Ridged surface for safe and easy grip Specifications- Weight: 5 kg- Length: 110 mm- Width: 144 mm- Height: 93 mm- Diameter of holes: 50mm Certification- Warranty: 2 year Warranty terms and conditionsIndoor use only. Normal wear and tear does not fall under warranty.