The Mercer Industries Type 1 Cut-Off Wheel has an aluminum oxide grain for cutting ferrous metals. Its extra thin design allows for smooth and fast cutting. Wheel is double external reinforced with high tensile strength fiberglass. Wheel cuts without vibrations or burrs. Experience fast cutting at less power and enjoy extended wheel life with our advanced formulation. Mercer Industries is a 3rd generation family owned company that was built on core values of Quality, Performance, Delivery, Service, and Price. Founded in 1968, Mercer Industries offers more than 3,000 products for the flooring, industrial, automotive and welding markets. Mercer, formerly known as Mercer Abrasives, is committed to serving its customers and providing quality products. For more information, visit mercer industries dot com. We're here to support you. Please contact our team at info at mercer industries dot com with questions or comments. Claims for warranty must be made within 90 days of the date of purchase. Proof of purchase required. This warranty does not cover any product that has been subject to misuse, neglect, negligence or accident, or that has been used in any way contrary to the purpose intended.