Cool cutting Titanium Nitride makes these high speed steel bits in the D1138 bit set tough enough to last up to six times as long as non-coated HSS bits. This indexed set features 29 fractional bits ranging from 1/16″ to 1/2″, lettered bits from A to Z and 60 numbered bits.
- 1/16″ – 1/2″
- A to Z
- 1 – 60
- Titanium nitride coated
- Indexed metal storage box included