Left Closed - Left Hand Locking. Left Hand Locking - Closed When Handle Is to the Left. Shear Breaking Load: 420KN (42 ton-force). Tension Breaking Load: 500KN (50 ton-force). Shear Safe Working Load: 210KN (21 ton-force).Tension Safe Working Load: 250KN (25 ton force). Forged Steel With Hot Dipped Galvanized Coating. Professional Installation is Highly Recommended (No Instructions Included).