B25 Ball Bearing 1-1/8″ OD X 5/16″ ID

Ball Bearings are used on a router bit to follow a template or the flat edge of your workpiece. The inside of the bearing has several metal balls that allow the bearing to freely roll without restraint. If adding to the shank of a router bit, use a lock collar to secure the bearing.
OD= Outside Diameter; ID= Inside Diameter
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