1 mm

2 mm

3 mm

4 mm

0.4 mm

0.8 mm

1.2 mm

Over 1.0 mm

Breast drill

Ratchet hand drill

Pneumatic hand drill

Electric hand drill light duty

Screw driver and hammer

Spanner and hammer

Punch and hammer

Drift and hammer

Helix angle

B Point angle

Clearance angle

Rake angle