Purchase the Replacement Algerbrush Chuck from Gulden. The chuck holds the burr, which is used to remove rust rings from the cornea. Purchase this if your current chuck shows wear or can no longer hold burrs tightly.
Use a flathead screwdriver or a pair of pliers to remove your old chuck. The new chuck can be installed simply by pushing it into the handle. You can sterilize this chuck in the autoclave. Do NOT sterilize the Algerbrush handle in the autoclave.