Our AIR-TIP? non-marring utility nozzle kit has non-marring edges to protect surfaces from getting marred when cleaning. A specialized resin allows each tip to be used on finished surfaces without marking up the area. The vacuum accessory kit includes a crevice tool and utility nozzle, which both have non-marring edges indicated by the black surface. The Milwaukee? AIR-TIP? non-marring utility nozzle kit is compatible with other wet/dry vacuum brands with 1-1/4, 1-7/8, 2-1/2 in Dia and is part of our AIR-TIP? family of trade focused vacuum accessories.