560-015 6 inch industrial belt sander drive pulley is a cast iron pulley that is grooved so it can be used on wet and or dry 6 x 48 and 6 x 60 inch sanders.
The 641-007 1 inch heavy retaining ring is a carbon steel clip used to secure the drive pulleys of the 4 and 6 inch wet sander drive pulleys on the shaft.
697-024 industrial machine spring is used to keep the sanding belt tension on the several of the Kalamazoo sanders and the abrasive blade centered on the 14 inch abrasive saws.