Image Item No. Description  3647  Technic, Gear 8 Tooth Catalog: Parts: Technic, Gear  6589  Technic, Gear 12 Tooth Bevel Catalog: Parts: Technic, Gear  32198  Technic, Gear 20 Tooth Bevel Catalog: Parts: Technic, Gear  32269  Technic, Gear 20 Tooth Double Bevel Catalog: Parts: Technic, Gear  3648  Technic, Gear 24 Tooth with 1 Axle Hole Catalog: Parts: Technic, Gear