Check the listing for details. Enduro Zero Ceramic Grade 3 6806 LLB Sealed Cartridge Bearing 30 x 42 x 7mm. Condition: New. Listed at 75.08 USD. ABI Enduro Zero Ceramic Cartridge Bearings with ABEC 5 Rating. "VV" type 2-lip non-contact Silicone labyrinth seals. CERBEC USA Grade 3 Si3n4 Silicon Nitride balls. All measurements are in millimeters. Nylon/graphite retainer. 52100 high carbon Chromium alloy races. ABEC 5 precision cartridge bearing. Races receive 3 cryogenic treatments and a rust proof Magnetite finish. Item Specifications: Material, Ceramic, Bearing I.D., 30, Bearing O.D., 42, Manufacturer Number, 6806, Thickness, 7, SHIPS TODAY! Order before 1:30PM EST, M - F, and this item ships the same day! HAVE A QUESTION?Expert customer service by bike experts! A Real Brick And Mortar Retail Bicycle Shop with people you can talk to! Contact Us! (9-5 Mon-Fri, 12-4 Sat & Sun EST) Chat With Us