Our 3M? Stikit? gold film abrasive disc roll 255L features a single roll tear-off disc format and Stikit? adhesive attachment, making it fast and easy-to-use. Aluminum oxide mineral abrasive with film backing balances aggressive cut with a consistent finish. Anti-loading coating and available seven-hole pattern help clear dust from the disc surface for longer life. M? Stikit? gold film abrasive disc roll 255L is packaged as multiple adhesive backed discs rolled onto a core. These discs tear-off conveniently one at a time for speed and efficiency and they require no liners which saves material costs. 3M? Stikit? discs come ready to use with a pressure sensitive adhesive coating on the backs - simply press the disc onto the backup pad and you're ready to go. They remove just as cleanly, leaving an uncontaminated surface for the next disc. We recommend using Stikit? discs with 3M? Stikit? disc pads.3M Stikit coated 255L PSA disc roll uses aluminum oxide as the abrasive material and has a diameter of 6 in. 3M incorporates this aluminum oxide material into the PSA disc roll forming a grit of P150.Specifications:Abrasive Type: CoatedSpecification parameters description:Grit: Grit is a measurement of the size of abrasive particles embedded in coated abrasives. The most common standards for grit size are the United States CAMI (Coated Abrasive Manufacturers Institute) and the European FEPA (Federation of European Producers of Abrasives). A smaller grit number means larger particles and a coarser grade, while high number grits are used for finer work. Grit is generally a unitless measure but is sometimes measured in microns.Abrasive Material: