The Forney 71566 12-Inch High Speed Diamond Contractor Blades are premium diamond blades. For cutting thin stock tiles 2-Inch and less in thickness, ceramics, granite and marble. Very thin kerf (width of cutting area). Forney Industries is one of America's longest operating family-owned metal working product companies. Founded in 1932, Forney offers more than 5,000 products for the hardware, automotive, farm and ranch and do-it-yourself markets. 12-Inch (304.8-mm) by 1/8-Inch (3.18-mm) thick high speed diamond contractor blade with 1-Inch (25.4-mm) arbor size. 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.