Model # 290ST
This set includes 2 heavy duty steel hinge bits for drilling pilot holes in cabinet and door hinges, door butts and all large and small hardware. The 2 sizes included are 7/64 in. (3 mm) and a 9/64 in. (4 mm). The 7/64 in. bit is compatible with screw sizes No. 5 and No. 6 and the 9/64 in. bit is compatible with screw sizes No. 8 and No. 10.