This lightweight, flexible, high intensity LED flashlight is perfectly suited for attaining piston wash readings from your engine. Its unbreakable true white LED bulb allows you to distinguish colors of all shades making piston wash patterns easier to read. It can also be used to illuminate many other hard-to-reach places on your snowmobile, ATV, motorcycle, automobile, etc. With up to 60 hours run time on 3 "AAAA"size alkaline batteries, it can also be used as a light source if you happen to get stranded. Extended, it is 14" long, and folds to a compact 7". Batteries are included, bulb life is rated at 100,000 hours, and flashlight is warrantied for life.