1/4 Inch Dowel Drill Hand Drill Machine 1/4 Inch | Manual Rotary Drilling Tool Dowel Drill Bit 30mm (1-3/16-Inch) Cutting Length, 55., 5mm (2-3/16-Inch) Overall Length. CMT 314 Thru Hole Solid TC Dowel Drill D-6x70 LH | Scott Sargeant UK Made of super-strength steel, spiral portion coated with orange PTFE. CMT Dowel Drill 1/4X30X55.5Mm Rh 306.064.11 Specifications: Sharpening Negatively ground spurs | D - Diameter 1/4in | I - Cutting height 30mm | L - Total Length 55.5mm | RHLH - Rotation RH | S - Shank 8x20mm | V - Spurs 2 | Z - Number of teeth 2 | MAT - Material HW 2 Cutting edges, 2 spurs, 4 spiral flutes, parallel shank with driving flat and length adjusting screw. Dowel drills and hand-held routers 312.080.11 2 Cutting edges, 2 spurs, 4 spiral flutes, HWM head with precision balanced center point.