R8 2RS Ceramic Sealed Bearing 1/2 x 1 1/8 x 5/16 inch Ball .5x1.125

R8 2RS Ceramic Sealed Bearing 1/2 x 1 1/8 x 5/16 inch Ball ABEC 7 with Grade 5 Ceramic Nitride Pro Series Silicon Nitride Balls Super high performance, smooth, with removable seals on both sides, ACERGoo 100% synthetic lubricant and a low resistance quiet PEEK inner cage Inner diameter .5 inch Outer diameter 1.125 inch Width .3125 inch

This bearing has many uses and is very popular for use in competitive wheelchair racing as the wheelchair wheel bearing.