6806 Ceramic Bearing | Fastest Bearing in the Business
6806 Ceramic Bearing. 6806 Ceramic ball bearing with dimensions of 30x42x7mm. 30mm inner diameter, 42mm outer diameter and 7mm width. Grade 5 Silicon Nitride Ceramic balls, the hardest and strongest ceramic material available, ACERGoo Made in USA 100% synthetic lubrication, dual removable seals.