PTI HSS Stub Drills

Stub drills are shorter than standard length jobber length drill bits. 

Used for drilling holes in steel and aluminium and similar materials, the shorter construction performs well on a range of materials, as it gives them maximum rigidity and a longer life. 

Stub drill bits are mainly used for drilling a variety of hole sizes and for making a hole or a larger blunt tip which is used to enlarge a drilled hole.

Diameter: 4.5mm