This wheel pack fits on all MET unit brush spindles. It features an easy twist tightening nut with a 0.750" through hole spindle bore. The outside diameter is 2.00" to hold most standard brushes. Light, durable and can hold up to six 6" diameter brushes or four 8" brushes. This item is used to load up various grit brushes to facilitate quick, efficient material removal by utilizing rough, medium and finish brushes all in one cycle. The MET units can handle up to 10 varieties of wheel packs making quick changes possible and help control brush wear by assigning specific packs for custom edge prep removal jobs.