Catalog de produsePlanetary Gearbox Reducer Nema 17 Stepping Ratio 20:1 25:1 40:1 50:1 100:1 Geared For 3D Printer Extruder Mechanical Arm RobotHome Improvement > Hardware17,95 USD (≈ 85,54 RON)În stocVândut de AliExpress WWLa magazin