IRWIN Tools IMPACT Performance Series Power Drill Right-Angle Drive Adapter 1/4-inch Shank, (1902386) Built for maximum durability and long life with impact drivers Low profile right angle attachement for accessing tight spots Chuck accepts all standard 1/4" hex shank accessories Constructed with steel gears and ball bearing drive for smooth drilling and long life 1/4" quick-change shank is designed to work with impact drivers, and reduces slipping in standard drill chucks