Propane Tank securely locks out LP gas cylinder handwheels with a diameter of up to 2-3/16″. Crafted in the USA from durable polyethylene plastic, the device has dimensions of 2½ ″ D x 3½ ″ W x 3⅜ ″ H. It allows for the use of three padlocks with shackles up to 9/16″ diameter.