Features:
An essential hardware tool for woodworking using.
High-speed steel, high quality with good durability for you to use.
Professional drill for deburring, chamfering, elliptic hole enlargement.
Suitable for punch holes through sheet metal, steel plate, aluminum plate, brass or wood.
This drill bit set
Includes:: 3 sizes (4-12mm, 4-20mm, 4-32mm), which meet your different needs perfectly.