R 6 LLB - ABEC-3, Radial Bearing (C3 Clearance) - 3/8" x 7/8" x 9/32" This ABEC-3 bearing features deep-groove design 52100 High-Carbon Chromium alloy races, with grade 10 Chromium Steel balls, dual-lip labyrinth (LLB) seals to withstand the outside elements, and to contain the 90% fill Mobil XHP 222 high pressure water proof synthetic grease. This size bearing is generally used as a hub bearing for BMX hubs, and can also be used as a pivot bearing though the MAX-type version of this bearing is better suited for suspension use. The Enduro line of bearings are available in high-carbon chromium steel, 440C stainless steel, ceramic-hybrid and XD15 with ceramic or stainless balls. Our bearings are always engineered with deepest groove races possible to accommodate the largest balls and feature dual-lip seals that ride in a micro-groove creating a full labyrinth to provide superior protection against the elements.