By locking the trigger, it can be used safely. The outer opening makes it easy to attach and detach thick wires and belts. Lock the trigger to prevent them from falling off. Tip for hanging wire ropes and chains. Standard load (t): 0.08 inches (8 mm). Dimensions P: 5.5 inches (137 mm). Dimensions a: 1.1 inches (28 mm). Dimensions: b: 4.3 inches (111111 mm). Dimensions (mm): Dimensions: 1.5 inches (37 mm); Dimensions: 1.0 inches (25 mm); Dimensions: 0.7 inches (17 mm); Breaking Load: 3.8 lbs (98 kN).