... have good tolerance of solvent resistance, oil, acid, alkali, such as performance, high resistance to creep and stress ability, excellent wear ... mm, dia14.28 mm, diaveteran mm, dia17.46 mm, dia19.05 mm, dia22.22 mm, dia25.4 mm, dia30.0 mm ... consulting, and you work together to create brilliant! Delrin ball as a bearing