Klein Tools' Reversible Impact-Driver Set is a rugged, hand-impact driver designed to turn rusted, frozen, or other stubborn screws. The internal, spring-loaded, helical design transforms the impact of a hammer blow up to 200 ft.-lbs. of shock torque. It can also be used with 3/8-Inch square-drive impact sockets.Features Easily reverses for tightening or loosening screws Internal, spring-loaded, helical design transforms the impact of a hammer blow to up to 200 foot-pounds of shock torque Reclosable, seal-tight vinyl pouch with hang-up grommet Can also be used on 3/8-Inch (10 mm) square-drive impact sockets Made in USA Rugged, hand-impact driver turns rusted, frozen, or other stubborn screws Includes 3/8-Inch (10 mm)-square-drive fitting adapter for 5/16-Inch hex bits and four assorted hex screwdriver bits (5/16-Inch (8 mm) and 1/2-Inch (13 mm) regular slotted tip, #2 and # 4 Phillips-tip) Rugged, hand-impact driver turns rusted, frozen, or other stubborn screws, and easily reverses for tightening or loosening screws Constructed of high-grade alloy steel that has been heat treated for added strength Warnings Do NOT use to pry or chisel. Never use on or near live electrical circuits. Always wear approved eye protection. Shock Torque: 200 ft-lbs Square Drive Size: 3/8 in (10 mm) Slotted Bits: 5/16 in (7.9 mm), 1/2 in (12.7 mm) Phillips Bits: #2, #4 Nut Driver Sizes: 5/16 in Overall Length: 10.6 in (26.9 cm) Height: 2.5 in Depth: 10.6 in Width: 4.3 in Weight: 2.15 lbs Handle Type: Metal with Oxide Coating Bit Retention: Quick Change Material: Heat treated alloy steel Country of Origin: United States DownloadsVideo DownloadVideo DownloadSpec Sheet