... of Origin: Jiangsu, China (Mainland)Material: chrome steel, carbon steelcage: Steel ,nylon ,brass ,bronzeroller: Carbon ,bearing steel,chromium ... .2 kgInner Diameter :87-280mmOuter Diameter :100-320mmMaterial:bearing steel; chrome steel;stainless steelCage:Steel ,nylon , ... lifetime of the bearing. About us:Wuxi Shenxi Bearing Co,Ltd, More than 20 years' experience in bearing manufacturing:the complete ...