Adapts standard drill bits for use with 1/4-28 threaded drills. Includes both collet and collet adapter. Overall of length of 1.125". #21 wire drill size.
Allows you to extend the length of your threaded drill bits, or pilot cutters to reach into recessed areas. One end is threaded male 1/4"-28 to fit into your Angle Drill, and the other has a 1/4"-28 female to accept the bit. 10" Working Length.
Size: 3/16". Deburrs the front, back or both sides of a hole in one pass. Works with any drill. Adjusts easily by turning a set screw in the shank to control the depth of cut.
Allows you to extend the length of your threaded drill bits, or pilot cutters to reach into recessed areas. One end is threaded male 1/4"-28 to fit into your Angle Drill, and the other has a 1/4"-28 female to accept the bit. 4" Working Length.