The Mercer Industries file is precision engineered for long life and maximum removal per stroke. Named for its shape. Primarily used by tool and die makers on slots, keyways, and acute angles. Smooth cut. 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 is committed to serving its customers and providing quality products. For more information, visit mercer industries dot com. Weâre 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.