Universal Design Rocker Switches New Universal Design for Automotive, Truck, Bus, Marine, & Recreational Vehicles. Snap-in mounting fits .830 x 1.450 panel cutout in .093, .125, .187 thick panels. Brass screw or .250 blade terminals. Nylon bezel actuator and housing. Circuitry On-Off, No. of Terminals 3, Type of Terminals 3-Screw, Actuator:Black Lens: Amber