Whiteside Bearing 5/8 in. OD x 1/4 in. ID is a high-quality industrial router bit bearing designed to match the equipment standards of Whiteside's bearing mounted router bits. This bearing is for replacing worn-out bearings, adjusting cutting depths by interchanging with existing bearings, or adding to bit shanks to make them bearing guided for template or pattern work. For optimal performance when adding bearings to bit shanks, it is important to use the appropriate size lock collar, either LC14 or LC12. Each bearing is sold individually, ensuring you get exactly what you need for your woodworking projects. Manufactured by Whiteside Machine Company in Claremont, North Carolina, this bearing reliable durability and precision. Model Number: B6