General description Contains 4 different tools most useful for installing pneumatic screwdrivers, electric screwdrivers, air drills, hand screwdrivers, and other hex tool installations. Technical specifications 1/4 inch 105 Degree Right Angle Drill Attachment Hex Shank: 6.35mm (1/4") Flexible Shank Drill Bit Extension Length: 29cm/11.4" (Approx.) Drill Bit Holder Lengths: 60mm, 100mm, 150mm Impact Bit Kit - 1/4" Hex Head: 6.35mm (1/4") Compatibility and accessories 1/4" to 1/10" Hex Socket Holder Adapter, quick change compatible Works with most drill bits, cordless drill bits, hand wrenches, and screwdriver chucks 3pcs Hex Shank to External Thread Impact Drill Adapter Socket Set: 1/4", 3/8", 1/2" Usage Connect the impact socket/wrench/socket bit/driver socket to the cordless power source Suitable for electric drills, connecting link, and flexible applications