LED Rocker Switch: illuminated LED light that looks good in any cab. Will provide a better identification when using your accessories at night and will add a custom look to your vehicle. DURABLE: Waterproof black hard surface rocker switch. The graphic has a very durable coating that is almost impossible to wear off. DPST: Double Pole Single Throw (ON)-OFF-(ON) Momentary Switch ILLUMINATED: Very good lighting capability with real-night-visibility. UNIVERSAL SIZE: mounting size hole is 1.41” (36mm) x .86” (22mm). This is the standard size of most switch holes in modern vehicles. Surface size is 2” (50mm) x 1” (25mm)