Our GT14101, traditional 15W 4inch Square led work light, hot seller with Emark R10(EMC), Emark R23(reverse lamp) approved. Waterproof grade can reach IP68, waterproof failure rate is less than 0.1% after continuous improvement of the production technology for this product in our factory. The lamp is very slim which can be assembled on any limited space of the vehicle, it also can be used as reverse lamp for the commercial vehicle, truck, car ect(ECE R23 approved), The lamps are fully radio interference resistant(ECE R10 approved). This product is spokesman with represeliable quality at a fair market price.