Taper Shank Drill Bits 6PCS M3-M10 Screw Tap Drill Bits HRC89 M35 Cobalt Taps Combination Bit 1/4 INCH Hex Quick Change Type: Tap Drill Bit Material: HSS-Co Shank: 1/4" (6.35mm) hex shank
Size: M3x0.5, M4x0.7, M5x0.8, M6x1, M8x1.25, M10x1.5