Made of metal material, durable. It's simple in design, yet very functional to use, showing you the way in the dark. Can be used for , , trucks, boats. If you need waterproof indicator light bulbs, this is the perfect choice! Features - Color: Assorted Color. - Material: Metal. - Size: 2.40X1.70X1.70cm/0.94X0.67X0.67in. - Thread diameter: 16mm. - Voltage: 3-220V. - Light source type: . - Working current: 15mA. - The indicator light is made of metal inner material, and the surface is and snow-resistant. - Smooth surface and nice polish, neat and generous, so don't worry about hurting your hands. - Boat and lights are easy to use and install, bringing you of convenience. - Compatibility, can be used to modulate and ship lights. It can also be used for model and RC . - After strict control and attention to fine details, only to provide you with the safest of black. Package list: 5 x indicator lights