1Pc 1 Modulu Spur Gear 1M 10T-20T Bore 4 5 6 6.35 7 8 10 12mm Mini Small 1 Mod Pinion Gears Transmission Accessories Motor PartsHome Improvement > Hardware4,38 USD (≈ 3,92 €)DisponibileSold by AliExpress WWVai al negozio