7/32" Ceramic Silicon Nitride Ball

7/32" or 5.556mm ceramic balls made from pure silicon nitride. Price is for one ball. Used in precision applications including in bicycles or anywhere where high strength, low friction, low rotational mass and high speed is required.

These 7/32" Silicon Nitride balls will also fit Campagnolo Record front hubs and Record bottom brackets. They will also fit Shimano headset M737.