Sun Gear 65 teeth Planet gear 16 teeth Ring gear 97 teeth Gears are 25mm wle 1.75, helix 15deg and angle 14.5 Material hardness is 400HB The sun gear has a 30mm sphe center. The planet gears need 17mm hole suitable for needle bearings. The quantity required are: Sun gear 4pc Planet gear 24pc Ring gear 4pc.