... Ball and 99%-AluminaCeramic BallDia(Φ): 3, 6, 8, 10, 13, 16, 20, 25, 30, 38, 50, 65, 752. Thermal Storage Ceramic ... life of bearings.Size(Inch):1/32, 1/16, 3/32, 5/32, 3/16, 7/32, 15/64, 1/4, 17 ... /64, 9/32, 5/16, 11/32, 3/8, 7/16, 31/64, 1/2, 17/32, 9/16, 19/32, 5/8, 11 ... /16, 3/4, 1, 5/4 ...