Plain Linear Bearing CFPJ13 13mm JIS, Square Flanged Center, Double Size The body is made of

The body is made of anodized aluminum while the 3 roller bearings are made of sealed 52100 chrome steel

JIS double round center flange plain bearing

Its double-sized body equals two standard bearings back-to-back for added support

providing a longer bearing surface for added support

Plain Linear Bearing CFPJ13 13mm JIS, Square Flanged Center, Double Size The body is made ofJIS Double Plain Linear Bearing, 13mm ID, square center flange, precision running clearance. This Simplicity bearing has a self lubricating FrelonGOLD liner bonded directly to the bore of a sturdy anodized aluminum body, with no separate insert, for maintenance free, oil free sliding in harsh environments such as extreme heat, dirt, welding splatter, and vibration, where ball bearings often fail. Its double sized body equals two standard bearings back