Jesa Bont 688 Steel Bearing size-pm The plate is fiberglass reinforced

The plate is fiberglass reinforced and mated with the fiberglass boot

- Light weight plastic cages create lower rolling resistance

Pitch: 12mm

Protection: Anti-Abrasion microfiber

- Light weight plastic cages for lower rolling resistance

Jesa Bont 688 Steel Bearing size-pm The plate is fiberglass reinforcedThis bearing has an exceptionally fine polished bearing track surface and incredibly precise balls. Light weight plastic cages for lower rolling resistance. The steel is extremely strong which helps the bearing keep its shape when under load. Jesa increased the radial clearance providing slightly less 'total contact ball patches', which reduces drag. Made in Switzerland. * This product requires cylinder spaces, not the normal self centering spacers.