This accessory kit is designed for use with the Rockler 1'' x 15' Band Clamp (#58432, sold separately), as well as older Rockler band clamps. The plastic boot slips over the ratcheting mechanism to help align the nylon band when you roll it up, and includes a rubber retainer strap that holds the band in a neat folded position when in storage. The boot also has a foam pad that protects your workpiece from the metal parts on the clamp mechanism. Includes four corner brackets that allow you to clamp rectangular objects more easily, and help to prevent glue from soiling the nylon strap.