Wedge-Style Ball Valve Lockout, 1-1/4in (31mm) to 3in (76mm) Diameter Valves. Fits manual, quarter turn ball valve handles to protect against accidental opening. Easy to use one piece design locks valve in OFF position. Accepts all BOZZYS safety padlock shackles and locking hasp diameters. Laser engrave your logo on the included stainless steel plate. maximum. Shackle diameter: 7 mm. Durable,lightweight temperature difference resistance -30～140℃. thermoplastic material is chemical resistant. and performs effectively in extreme environments. Valve locks are recommended to be used in conjunction with steel padlocks and safety signs to achieve energy isolation, equipment locking, and prevention of misuse. The lock body is made of A3 steel plate, the surface is sprayed at high temperature, it is not easy to rust, and it is suitable for various harsh working environments