D=17mm LK=57.5mm S=10x26mm Ideal for hinges, Used in boring machines equipped with adaptors or chucks. Used for drilling accurate and clean-cut blind holes in solid wood, wood composites, plastic, and laminated materials. Super-strength steel-Cutter portion coated with orange or black P.T.F.E. T.C.T. precision balanced centre point-2 precision ground TCT cutting edges (Z2) 2 negatively ground spurs (V2) Parallel shank with driving flat and length adjusting screw.