Enduro 21531 LLB Sealed Cartridge Bearing Category-Lubricants & cleaners } Hidden nipples are inverted

} Hidden nipples are inverted and for use with high profile rims

Bold shape makes it easy to remove the tightest of tires without bending or breaking

This light is an integral part of daily commutes or road rides and for staying safe day or night

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Enduro 21531 LLB Sealed Cartridge Bearing Category-Lubricants & cleaners } Hidden nipples are invertedEnduro 21531 LLB Sealed Cartridge Bearing. Enduro Standard Design Cartridge Bearings. 90% filled with Mobilux NGLI 2 synthetic grease dual lip labyrinth seals If the bearing you are replacing is not marked with a manufacturer number measure it and compare to specifications listed TECH SPECS Bearing O. D. (mm) 31 Bearing I. D. (mm) 21. 5 Manufacturer Number 21531 Material Steel Thickness 7