Bearing 1/4 inch bore. Bearings are shielded to prevent penetration of dust and grease packed for life. They should not be cleaned with solvent or lubricated as this will dissolve the grease and cause premature bearing failure. Scrape off any resin build-up.Always check the tightness of the fixing screw before using cutter.

Brand Name	Trend
Manufacturer Model No	TREB21
Type	Bearing
Protects From	dust and grease
OD	21 mm
ID	6.35 mm
Thickness	5 mm
accessory_type	Bearing