"These pushbutton lockouts are to be made to temporarily prevent access to the ON\/OFF and emergency stop controls for production and facility utility operating equipment.Fast and convenient lockout at the point of need. One time installation of the low profile, unobtrusive lockout base. Provides an obvious, visual indication that the equipment control button is locked out, as well as a view through the translucent cover of the ON\/OFF status of E-Stop buttons. Accepts one padlock with a shackle diameter up to 7 mmType = Push Button LockoutMaterial = Polycarbonate, Stainless SteelLock Shackle Maximum Diameter = 30mm"