Whiteside Bearing 1-1/8 in. OD x 5/16 in. ID is a high-quality industrial bearing designed to match the equipment on Whiteside's bearing-mounted router bits. This versatile bearing can be used to replace worn-out bearings, interchange with existing ones to automatically adjust cutting depths, or add to bit shanks to create bearing-guided bits for template or pattern work. When adding bearings to bit shanks, be sure to use the appropriate size lock collar, either LC14 or LC12. Each bearing is sold individually and manufactured by Whiteside Machine Company in Claremont, North Carolina. The specifications include an outer diameter (OD) of 1-1/8 inches and an inner diameter (ID) of 5/16 inches. Model Number: B25