4Pcs 18t 19t 20t 21t Steel 32p Pinion Gear 5mm Bore for 18 110 RC Car Motor

This is hardened steel 18 19 20 21 tooth, 32 pitch pinion gear for motors with a 5mm shaft FEATURES CNC machined- Hardened steel to increased wear resistance and improve fatigue life Nitrided to enhanced hardness corrosion resistance SPECIFICATIONS:  Tooth count: 18 19 20 21 Tooth pitch: 32 pitch?0.8 module is the same as 32 standard? Tooth face width: 7mm length: 14mm For shaft: 5mm PACKAGE INCLUDE: 4x Pinion gear(18 19 20 21T) 4x M4x4mm set screw 1x 2mm hex wrench