If you are looking for a set of drill bit that has nice quality, this one is it. They work as a great drill and meet your different demands perfectly.

Features:
Hexagonal shank.
Drilling and tapping 2 in 1.
Suitable for wood, plank, aluminium plate or sheet iron.
High-speed steel, high quality with good durability for you to use.
These combined tap and drill works great in drilling and tapping processing.  
It includes 6 sizes in one drill bit set(1/4, 1/8, 3/8, 3/16, 5/16, 5/32), which meet your different needs perfectly.

Specifications:
Material: High-speed steel
Package Weight: Approx. 82g / 2.89oz
Package Size: Approx. 9 * 5.5 * 0.6cm / 3.54 * 2.17 * 0.24in

Package List:
6 * Drill Bit