For quick changes of wool bonnets. For use with MAK9227C polishing (743403-A) and compounding (192629-7) wool bonnets. 5/8 - 11 UNC spindle7 Hook and loop back up pad for use with MAK9227C polishing (743403-A) and compounding (192629-7) wool bonnets. 5/8 - 11 UNC spindle.