Dude Tools SD1 Simpson Dude Buster Socket for 1" Nut Bolt with 1 2" Drive Hatchet light weight material is corrosion light weight material is corrosion resistant and flame retardant Ultra high performance filters protects against UV And IR Special turnover headband mechanism allows for greater comfort and reduces fatigue Utilizes high performance solar cells w 2 replaceable CR2450 batteries as power back up Complies with DIN Knit Wrist helps prevent dirt and debris from entering the glove The socket is used for high strength 1" diameter bolts and threaded rods that require a heavy hex nut All Dude Tools High Impact Deep Socket is designed to be used and abused for Heavy Impact Work with 1 2" drive air or electric impacts