Jk files & tools supplies a range of high-speed steel twist drills and tool bits. Jobber series drills are standard straight shank ground flute drills for general purpose application on steel and cast steel, alloyed and non-alloyed, grey cast iron, german silver steel, graphite, etc. It is available in blue finish, slow and quick helix. The range covers: 0.5 mm to 16.0 mm [inches 1/32 to 5/8] with h8 tolerance. The jobber series drills have the following features:
- finish - bright;
- point angle - standard 118° to 120°;
- right hand cutting and right hand normal helix;
Its manufacturing specifications is conforming to is: 5101/din: 338/bs: 328/iso.
