Cap Barbell 135 lb Bumper Plate Set with 7" Power Bar, Muscle Clamp and Mat: * Set includes 1 pair (2 each) of 45 lb bumper plates * One 45 lb/20kg Cap Barbell power bar rated yield strength 135,000 and 165,000 PSI * One 4" x 6" x .5" diamond plate rubber mat * 1 pair of Muscle Clamp collars made of high impact plastic * Max weight cap: 1500 lb including bar * 30-day warranty * Model# OSR2-135PBM