#21HSJOHD Jobber Drill, High Speed Steel, Heavy Duty, 135° Point Size: #21, NAS907 Type B Features: This Jobber drill is made from M-7 high speed steel.

High speed steel (HSS) provides good wear resistance and can be used in general purpose applications on both ferrous and non-ferrous materials.

This Jobber drill is manufactured to Aerospace Standard 907

Jobber length drills, commonly referred to as simply ‘Jobber Drills’, are the workhorse of the aviation industry.

The spiral flutes of a Jobber drill are constructed with a higher flute angle to remove chips more easily.

Quality is the key to producing satisfactory holes, and will determine production rates and tool durability.