3/4” x 1-5/8” Ceramic Hybrid Front Wheel/Hub Bearing - 3/4” x 1-5/8” Ceramic Hybrid Front Wheel/Hub Bearing 3/4” x 1-5/8” x 7/16” Ceramic Hybrid Front Wheel/Hub Bearing (big bearing) Ceramic Hybrid Bearings have Steel races and Ceramic Balls. In ball form, ceramic is harder than steel and because ceramic balls are non-porous they are virtually frictionless and capable of spinning faster and with less drag than steel balls as well as being more durable.