... like brass, bronze, iron, or steel and often plated with zinc or chromium. Non-mentallic materials like plastic, nylon. ... contact us.Any comments, please dont hesitate to contact with us. Welcome to make inquiry, thank you!Your favorite ... 4-100 mm2.Series: Linear running bearing series, Flange linear bearing series, Support rail units, Linear motion ball series, Cylinder linear rail series, Wheel ...