"These Lockout Devices keep your critical valves ready for correct lockout. Retrofit lockout devices stay permanently in place at the point of need. They ensure that critical valve energy isolation points are always ready for lockout. Simple one-time installation. These eliminate the need to choose and carry the correct devices for each lockout event. They securely retain the operating hendle in the 90° fully-closed position.Ball valve lockouts. Durable die-cast metal body, red. Permanently mounts to valve body or pipe. Adjustable design to fit various valve sizes. Each comes with two hose clamps to fit various diameter piping. Available in 2 sizes. Size small, for 0.5 inch to 2 inch ball valves (RS 876-5376). Size large, for 2 inch to 4 inch ball valves (RS 876-5373)Type = Ball Valve LockoutMaterial = SteelAttachment Point Minimum Size = 50.8mmAttachment Point Maximum Size = 101.6mm"