Our 3M Hookit quick release system offers excellent support of the carrier and allows for particularly easy lens changes as well as an optimised service life, while the foil backing material ensures a perfect surface finish. The Purple Aluminium Oxide Disc is available in various sizes and grits. An open scattering gives more space between the abrasive grains, allowing abrasive particles to accumulate in the gaps instead of adding the cutting edge of the grains. The dust-repellent coating allows the disc to grind softwoods, varnishes and other materials for longer that would otherwise clog the disc and affect the grinding ability.