Isostatics 102031-5 FF-501-2 SAE841 Oilube Powdered Metal Bronze Flange Bearings, 0.3125" ID (Pack of 5) Self-lubricating - when in motion oil rises to the surface for lubrication and restores itself when at rest Ideal for heavy loads at moderate speeds or light loads at high speeds - max Pv 50,000, P-Load 2,000, V-SFM-1,200 Effective in temperature range of +10F to + 175F with standard oil RoHS, REACH, DFARS compliant