- 1 x RC 52T M0.8 32P High Precision Spur Gear 52 Teeth Module 0.8 Pitch 32 - Fit 2mm and 2.5mm Pins - 5mm Bore Center Hole - High Precision and High Quality Drive Gear - 7075 T6 Aluminum Alloy (read about it) - 52T Mod 0.8 Pit 32 Spur Gear 52 Teeth - Width 7mm and Ø 43.2mm - 32P and M0.8 are identical: same Gear Teeth specifications but express in two different units (just like a distance can be expressed in Metric units or Imperial units) - Adjust distance between motor gear and main gear as needed after installing and before using for a good but not too tight contact between gear and pinion.