Switch is full-round, which is not only more beautiful than most of the "round head and square body (upper round and lower square)" switches on the market, but also has better stability and is not easy to . Have upgraded the waterproof cover according to the best-selling switches on the market, which makes it has good waterproof performance and can be used in the wet and dusty environment. The color of the light is soft blue, not blinding. The light comes on when the switch is turned on, which can well indicate the status of the switch. The switch adopts embedded design, which makes it very convenient to use. Simply insert it into the card slot. Drill a small round hole about 20mm (0.8 inch) in diameter, insert the switch and connect the positive and negative poles as instructed. The switch is generally applicable to all 12V equipment, such as cars, boats, golf carts, etc. It is also widely used in household appliances, such as water dispensers, treadmills, coffee pots, etc. Material: plastic colour: black Package Contents: 10 x Round Toggle LED Switches Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.