Makita 323016-A Wire Brush Adaptor Makita Part 323016-A For use on small grinders that have an M10 Spindle Diameter and a 1.5 Spindle Thread Pitch. Allows the use of cups or wheels with a 5/8 Arbor Hole Diameter and 11 UNC Thread Pitch. Heave Duty quality construction Note: For grinders with an M10 Spindle Diameter and 1.25 Thread Pitch use 323015-A