This set of three quick-change self-centering hinge bits are part of Snappy’s 1/4" hex drive bit and accessory line that lets you quickly and easily change from one bit to the next. Set includes 5/64", 7/64", and 9/64" spring-loaded self-centering bits for #2, #4, #6, #8 and #10 screws. The bits will perfectly align your screw holes with the holes in your hinges, drawer slides or other similar hardware.Features: Drills accurate holes for hinges, handles, drawer slides, and more Standard hex shank fits all power bit and quick change chucks Spring-loaded Self-centering Specifications: Drive Shank: 1/4" Hex Recommended Screw Size (5/64" Hinge Bit): #2 (hard wood) & #4 (soft wood) Recommended Screw Size (7/64" Hinge Bit): #6 (hard wood) & #8 (soft wood) Recommended Screw Size (9/64" Hinge Bit): #8 (hard wood) & #10 (soft wood) What's Included (3) Self Centering Hinge Bits - 5/64", 7/64" and 9/64"