Suitable for inside or outside. 12 V connection. Skull dimensions: Height: 22 mm, width: 8 mm, fitted height: 19 mm. Mounting hole diameter: 6 mm. Screw size: M6. Length of connecting cable: approx. 50 cm Length of thread: 22 mm stainless steel. Material: ABS plastic. LED colour: blue. Set of 2 bolts, incl. washers, lock washers and nuts.