COUNTERSINK, 6.3MM; Drill Bit Size Metric:6.3mm; Drill Bit Size Imperial:-; Effective Length:-; Overall Length:45mm; Countersink Angle:90°; Drill Bit Type:Countersink; Drill Point Diameter:1.5mm; External Diameter:6.3mm; Head Diameter:6.3mm; Material:HSS; Shank Dia:5mm; Shank Length:37mm