A two-zone pre-polish and polishing lap. The outer zone is the new Zinc+™ alloy and is establishing itself as a very fast and versatile pre-polishing lap. The inner zone is the popular DIAMATRIX™ polishing surface. Similar to the popular DOMINATRIX™ with the BATT pre-polish band, the DIA-Z+™ offers a more aggressive pre-polish at a lower price. Consumer Testing on these laps has been done in public.