The Mercer Industries blue Lightning diamond blades for glass tile are available in 4-1/2", 7" and 10". the blades have a high diamond concentration which allows the blade to last longer and increase efficiency. It is tensioned and balanced so No wobble when using the blade. Features a steel core with proprietary diamond BOND. Tile diamond blades are designed to cut cleanly and accurately. Diamond blades last up to 100x longer than standard abrasive blades. 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. We're here to support you. Please contact our team 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.