Timing Belt Pulley GT2 40 teeth 20 teeth Reduction 1:2/2:1 3D printer accessories belt width 10mm Bore 3.17 4 5 6.35 8& 10 12 mmHome Improvement > Hardware8,40 USD (≈ 7,52 €)9,77 USDDisponibileSold by AliExpress WWVai al negozio