Gear set included: 3 ring gears (sun gear), three middle gears, 5 planet gears (10 teeth), five planet gears (11 teeth) 3 planets (15 teeth) Ring gear: the biggest one, outer diameter: 34.3mm; height: 7mm Medium, outer diameter: 34mm; internal diameter: 24.5mm, height: 6.8mm The smallest one, outer diameter: 31.5mm; height: 6.5mm Denture: Teeth with 10 teeth, outdoors diameter: 8.7 mm; inside hole: 3 mm; thickness: 4.5 mm Number of enamel eleven teeth, outer diameter: 9mm; inner hole about: 3mm; thickness: 6mm Number of enamel 15 teeth, outer diameter: 10mm; bore about: 2mm; thickness: 4mm Center wheel: 12 teeth, enamel outer diameter 9.8mm, diameter: 22MM, small cylinder diameter: 2mm 15 teeth, tooth outer diameter 12mm, the most important part of the outer diameter of enamel 25mm, Shaw cylinder diameter: 2.5mm Without teeth, the maximum outer diameter of 23.8mm, bore five * 7mm, small cylinder diameter 3mm