Image Item No. Description  2471  Technic, Gear 24 Tooth with Clutch on Both Sides Catalog: Parts: Technic, Gear  2474  Technic, Gear Ratchet 8 Tooth Catalog: Parts: Technic, Gear  73763  Technic, Gear Worm Screw 6L Catalog: Parts: Technic, Gear