0.01 mm
0.02 mm
0.009 mm
0.002 mm
Rapid cooling
Reduce vibration
High tensile strength
Very difficult to machining
18.5
20
19
17
15.75 mm
15.50 mm
14.65 mm
16 mm
8.5 mm
9.75 mm
10.00 mm
10.25 mm