GDS Racing MOD1.5 (M1.5) Pinion Gear Hardened Steel 8 mm Bore
Total height: 16 mm
Hole size: 8 mm
Pitch: Module 1.5
One screw included
The gear was made of cased hardened Cr Steel then carbonizing the surface.
It's has very tough core inside and high hardness on the surface for wear-proof.