Universal 4" round work lamps. 12 volt, single wire. Universal use, multifunctional for golf carts, tractor trucks. These work lamps are surrounded in a black rubber housing with chrome plated mounting bracket. Made from high impact thermo plastic resin. 35 watt bulbs are not replaceable, they have sealed beam. These products have the feel and shock absorbing characteristics of rubber, but are UV resistant. Stands up to road contaminants that deteriorate rubber lamp bodies. Changing industry standard sealed beams makes each model available as a work, fog, spot or halogen lamp. Dimensions are 4.88" x 5.88" x 3". Replaces manufacturer number 4KB-84314-01-00. If using for a golf cart, these lights are best for the gas powered models because they use a frame ground connection. However you can remove the light from its rubber housing and pull the frame ground wire through the housing to convert it to a 2 wire connection. Professional installation is highly recommended. We do not offer technical support.