Material:GCR15 OEM,sample order Competitive price Long cycle life Good quality,fast delivery and best service As a professional manufacturer for Linear motion products,Lishui Best Bearing Co., Ltd,specializing in the production of Ball Bearing,Linear Motion Bearings,Linear Guide, Linear Slider Unit,Cylindrical Linear Guide,Flange Linear Bearings,Rod Ends,Spherical Plain Radial,Fuel Tanks Earrings ...