CMT 372.100.11 Four Flute Dowel Drill, 10mm (25/64-Inch) Diameter, 10X30mm Shank, Right-Hand Rotation 65mm (2-9/16-Inch) Cutting length, 105mm (4-1/8-Inch) Overall Length. Premium quality super-strength steel body and spiral portion with center point. 2 precision ground cutting edges, 4 spiral flutes, 2 negatively ground spurs. Drill blind holes in solid wood, wood composites, plastic and laminated materials. Use on boring machines equipped with adaptors or chucks.