[Copper 5MM]
Step outside diameter: 9 mm /9.9mm
Indexing circle diameter: 11.3 mm
Tooth length: 6 mm
Total length: 13.1 mm
Material: Copper / POM (Black)
Fixing screw hole: hole 3/4 = M3; hole 5 = M4
(Note: This gear is a hobbing process, and the accuracy can reach 8 levels.)
The inner hole is finished and the tolerance is H7.