For use on boring machines equipped with adaptors or chucks. These bits are produced from special grade steel, and the twin spiral P.T.F.E coated for efficient chip clearance. The all-important T.C.T cutting tip is precision balanced with centre point and two ground cutting spurs. The parallel shanks are 10mm diameter, with a ground driving flat and have a length adjusting screw. Available either right or left handed 57.5mm overall length (27mm Cutting Length). Use in solid timber, manmade board or plastic laminated materials.