Planetary gearbox

Per model needed:

2x Small Pin 2x clip 2x Spacer 1x input shaft 1x Front 1x Turn Handle 1x Handle Bar 1x Big clip

Per Stage:

1x Ring Gear 3x Planet Gear 1x Sun Gear Planet holder

Per 2 Stages:

2x Pin 2x Clip

Per 3 Stages replace Pin with Large Pin