Check the listing for details. Countersink 90 Degree HSS Co5 Single Flute | Bordo. Condition: Brand New. Listed at 33.51 USD. Countersink 90 Degree HSS Co5 Single Flute | Bordo Countersink 90 Degree HSS Co5 Single Flute | Bordo SINGLE FLUTE COUNTERSINKSFor countersinking and deburring in a wide range of materials including ferrous and non-ferrous metals. The fluted countersink cutter is used to provide a heavy chamfer in the entrance to a drilled hole. This may be required to allow the correct seating for a countersunk head screw or to provide the lead in for a second machining operation such as tapping. Use on light to medium materials. Resharpenable. All Bordo Countersinks are made from 100% M35 Cobalt High Speed Steel. Cobalt offers increased wear and heat resistance in alloy steels, stainless steels and other abrasive or difficult materials. This increases tool life in all production applications. SINGLE FLUTE COUNTERSINKSFor countersinking and deburring in a wide range of materials including ferrous and non-ferrous metals. The fluted countersink cutter is uséd to provide a heavy chamfer in the entrance to a drilled hole. This may be required to allow the correct seating for a countersunk head screw or to provide the lead in for a second machining operation such as tapping. Use on light to medium materials. Resharpenable. All Bordo Countersinks are made from 100% M35 Cobalt High Speed Steel. Cobalt offers increased wear and heat resistance in alloy steels, stainless steels and other abrasive or difficult materials. This increases tool life in all production applications.eBay integration by Countersink 90 Degree HSS Co5 Single Flute | Bordo SINGLE FLUTE COUNTERSINKSFor countersinking and deburring in a wide range of materials including ferrous and non-ferrous metals. The fluted countersink cutter is uséd to provide a heavy chamfer in the entrance to a drilled hole. This may be required to allow the correct seating for a countersunk head screw or to provide the lead in for a second machining operation such as tapping. Use on light to medium materials. Resharpenable. All Bordo Countersinks are made from 100% M35 Cobalt High Speed Steel. Cobalt offers increased wear and heat resistance in alloy steels, stainless steels and other abrasive or difficult materials. This increases tool life in all production applications. SINGLE FLUTE COUNTERSINKS For countersinking and deburring in a wide range of materials including ferrous and non-ferrous metals. The fluted countersink cutter is uséd to provide a heavy chamfer in the entrance to a drilled hole. This may be required to allow the correct seating for a countersunk head screw or to provide the lead in for a second machining operation such as tapping. Use on light to medium materials. Resharpenable. All Bordo Countersinks are made from 100% M35 Cobalt High Speed Steel. Cobalt offers increased wear and heat resistance in alloy steels, stainless steels and other abrasive or difficult materials. This increases tool life in all production applications.eBay integration by eBay integration by