Jobber Drill

jobber-drills
jobber-drills

A jobber drill bit is a bit that has a long length compared to its diameter. Jobbers have a length anywhere from 8-12 or 9-14 times the diameter.

These bits can be measured using a number of different systems including a basic number range (1-80), letters (A-Z), wire (increase by whole number), standard metric sizing or in fractional sizes.