CMI Double 1 1/4" Micro Pulley MBS: 7000 lbs; Minimum Breaking Strength: 7,000 lbs (31kN); Weight Climbers: 50 grams; Weight Rescue: 61 grams; Weight Double: 120 grams ROPE CAP: 1/2" SIDE PLATES: Purple AA MECHANICS: Bushing WEIGHT: .25 lbs