1pc 12T-20T 3 Mode Blue Nylon Spur Gear with Step 12 13 14 15 16 18 20 Teeth Module Motor Gear Plastic Gear Keyway Bore 14-30mmHome Improvement > Hardware5,40 USD (≈ 4,83 €)6,35 USDDisponibileSold by AliExpress WWVai al negozio