Image Item No. Description  41666  Technic, Arm 1 x 7 with Gear 9 Tooth Double Bevel Ends Catalog: Parts: Technic, Gear  41667  Technic, Arm 2 x 5 with 1/4 Gear 8 Tooth Double Bevel Catalog: Parts: Technic, Gear  32498  Technic, Gear 36 Tooth Double Bevel Catalog: Parts: Technic, Gear