This set of combined tap and drill works great in drilling and tapping and it has 6 sizes in a set, which would meet your different demands perfectly.
Features:
1/4" quick change hexagonal shank.
High-speed steel with titanium coated, rust protection and good looking.
The combined tap and drill performs well in drilling and tapping processing.
Drilling and tapping 2 in 1, suitable for wood, plank, aluminium plate or sheet iron.
It includes 6 sizes in one drill bit set(M3*0.5, M4*0.7, M5*0.8, M6*1, M8*1.25, M10*1.5).
Specifications:
Material: High-speed steel 6542
Surface Treatment: Titanium plated
Hex Shank Diameter: 6.35mm
Package Weight: Approx. 87g / 3.09oz
Package Size: Approx. 9 * 5.5 * 0.6cm / 3.54 * 2.17 * 0.24in
Package List:
6 * Screw Tap