Enduro 6805N Zero Ceramic Cartridge For Shimano & Campy BB Cups ID=25 OD=37 W=6

ABI Enduro Zero Ceramic Cartridge Bearings with ABEC 5 Rating. ABEC 5 precision cartridge bearing Races receive 3 cryogenic treatments and a rust proof Magnetite finish CERBEC USA Grade 3 Si3n4 Silicon Nitride balls "VV" type 2-lip non-contact Silicone labyrinth seals 52100 high carbon Chromium alloy races All measurements are in millimeters Nylon/graphite retainer Item Specifications Material Ceramic Bearing I.D. 25 Bearing O.D. 37 Manufacturer Number 6805N Thickness 6

CERBEC USA grade 3 ceramic balls The Race is 3 times cryogenic treated to lessen bearing resistance,and then given a magnetic coating Silicone VV type seals Tested to a high ABEC 5 precision rating