With the new ultra sharp and refined zirconium grain, the disc will stay sharper for a longer period of time while removing more material faster Special top coat continuously cools and lubricates the disc for smooth, vibration-free grinding and sanding from start to finish Eco-Trim™ trimmable backing extends disc life up to three times Ideally used on steel and stainless steel Typical applications include grinding and finishing welds, as well as surface finishing Reduced waste; Eco-Trim™ allows trimming the backing pad up to 3 times to expose unused material and extend the life of the product Less plastic; 35% of the weight of the Eco-Trim™ is natural fibers to reduce overall quantity of synthetic components required Diameter: 5" Arbor Size: 7/8" Abrasive Material: Zirconia Alumina Type: 27 Max. RPM: 12 200