The Master Lock No. S2151 Removable Push Button and Rotary Switch Cover provides an effective solution to prohibit unauthorized access to switches and controls in industrial and commercial environments. This cover fits a range of switch sizes, including both 30.5mm and 22.5mm diameter switches, and accommodates buttons up to 2in (51mm) in diameter and 1-3/4in (44mm) tall. The versatile design features a clear base and cover, allowing visibility of nameplates and labels for easy identification while ensuring safety.