1pc 15T-30T 06B Sprocket Wheel for Roller Chain 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Tooth 304 Stainless Steel GearHome Improvement > Hardware6,67 USD (≈ 5,49 CHF)7,85 USDDisponibileSold by AliExpress WWVai al negozio