4 inch Clear Round Sealed Back-Up Light - This sealed, 4 inch round clear light can function as either a back-up or utility light. It features an extra wide, spin-welded, tongue-and-groove lens, lip and waterproof seal with a high performance, copper alloy conductor to eliminate the possibility of wire failure. The state-of-the-art bulb design gives you three supports for the minor filament and two supports for the major filament, providing long bulb life while the wedge-base socket prevents premature bulb failure. This is the light only, and requires a mounting grommet (Peterson Mfg #426-18 - See STS #6015900) and 2-wire plug (Peterson Mfg #431-49 - see STS #6020610) for new installations. Clear lens in color. Dimensions: 4-1/4 inch in diameter x 2-1/6 inch D. 1 per package.