1piece Convex Step Copper 0.5Mod 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 Teeth 0.5 Module Precision Gear PinionHome Improvement > Hardware5,68 USD (≈ 5,08 €)8,12 USDDisponibileSold by AliExpress WWVai al negozio