Cleaner, Longer Lasting Abrasive System 3M™ Trizact™ Film Belts are coated with a uniquely structured aluminum oxide mineral on a resilient film backing. Microreplication – a proprietary 3M technology – produces abrasives that start sharp and stay sharp, delivering more consistent cut and finish over their lifetime. The aluminum oxide mineral is contained in pyramid-like microreplicated features evenly distributed across a backing in a precise pattern. As the peaks of these structures wear away, fresh cutting mineral is exposed, ensuring a fast, consistent cut rate. Greater Productivity, More Desirable FinishesUnlike conventional abrasives, which are constructed from randomly-spaced and irregular-shaped minerals, the uniform configuration of Trizact™ abrasives helps deliver more consistent, predictable finishes, higher, more even rates of cut, cooler grinding and finishing temperatures, and ultimately, fewer processing steps for greater productivity. The unique construction of Trizact abrasives requires a different grading system. Grade is defined by the average particle size in microns and begins with an “A.” Lower is finer. The 3M™ Trizact™ narrow film belt is available in A5, A10 and A35 micron grades and widths up to 26 inches.