Works with any 24V DC, Best for Truck, RV Trailer, Lorry, Pickup, Boats etc Functions as clearance, side marker or identification light,trailer light etc.. Each lamps contains 20 high power LED Diodes with brightness lighting output Removable shock absorbing sponge pad makes easy installation. Waterproof Voltage: 24V Led Number: 20 LED Waterproof Rate: IP67 size:about 115x10mm Material:Sponge + plastic + rubber colour:Yellow Package Contents: 8 x Side Marker Light Only the above package content, other products are not included. Note: Light 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.