Radial Ball Bearing, Double Sealed, 0.7500" Bore Dia., 1.6250" Outside Dia., item name is 88630-2RS, Sealed Ball Bearing, the inner diameter is 3/4" (0.7500") , outer diameter is 1 5/8" (1.6250") and the width is 1/2", bearing has 2 Rubber Sealed to protect the bearing from dust or any possible...