Features Five pack. Tool Steel (WS) body with High Speed Steel (HSS) drlll bit for longer life. Countersink ensures screw head is sub-flush and neat. For use in quick chuck drill tools. Can be used to counterbore deeper holes for plugs. For timber, fibre-board and chipboard. Case hardened body for longer life. Adjustable drill bit to suit material thickness. Use in quick chucks and impact drivers. Specification Shank Diameter - 1/4 inch hex Softwood - No.6 to No.12 Hardwood - No.4 to No.10 Drill dia. - 2mm to 3.5 mm Countersink dia. - 9.5 mm & 12.7 mm Standard Equipment 1x TREND QR/CS/SET Quick Release 5 Piece Countersink Set KINDLY REMINDER: Delivery to the UK Highlands, Channel Islands, Northern Ireland, Isle Of Wight, Isle Of Man and the following postal code areas: BT, FK, KA (1-30), PA(1-49), PA(60-78),PA80, PH, PH(11-40), PH(41-44), PH(49-50), AB, IV, KW, ZE, GY(1-10), JE(1-5), PO(30-41), IM, IR, HS are excluded from our standard delivery charge and may incur extra costs.