£77.28 inc VAT Option: No. 10These combination tools in TCT can be used in abrasive materials.They will drill, countersink and finally counterbore a parallel hole.Designed to receive plug maker group 24.The drill diameter sizes are for a clearance hole only.For use with drilling machines or routers. Specifications: T.C.T.1/4in Shank.Woodscrew Size. No.10.Drill Diameter 7/32in.Countersink Diameter. 12mm.Drill Length. 20mm. Add to Basket Quantity