Featuring low-profile, unobtrusive design, Twist and Secure™ Push Button and E-Stop Safety Covers temporarily prevent access to machine start and engaged emergency stop buttons for production and facility utility operating equipment. Units are available in 4 combinations of removable cover and permanently mounted base to fit standard 16, 22, and 30 mm pushbutton stem diameters on control panels. Bases require one-time installation that then allows workers to twist safety cover into place.