ITEM NAME:5 tlg HSS Countersink Counterbore Countersinks Set Wood Metal 6-19mm 90 Deg C4U2 5 tlg HSS Countersink Counterbore Countersinks Set Wood Metal 6-19mm 90 Deg C4U2 Name: 90 Degree individual flute inserts drill bit drill Material: carbon steel Surface Treatment: Nitriding + Gold Finish Specification: 6mm, 10mm, 13mm, 16mm, 19mm Quantity: 5 pieces 5 pieces Metric Diameter: 6mm: shaft diameter 6mm, 6mm head, for 1mm-4mm aperture chamfering; 10mm: shaft diameter 6mm, 10mm head, for 2mm-5mm opening chamfering; 13mm: shaft diameter 6mm, 13mm head, for 5mm-9mm opening chamfering; 16mm: shaft diameter 6mm, 16mm head, for 7mm-12mm bezel chamfering; 19mm: shaft diameter 6mm, 19mm head, for 8mm-13mm bezel chamfering; Purpose: for low hardness of the work piece, such as wood. When using cutting edge chip removal, the cutting edges are not easily blunt! Use for home and industry.
