... heat treatment 4. Keyway in the hole is broaching production. 5. CNC machine 1. We produce various gears, including spur gears.2 ... Quenching and so on.4. Item: M0.5,M1,M1.5,M1.7,M2,M2.5,M3,M4,M5,M6 and so on ... .5. Keyway in the hole is broaching production.6. We have ...