The Forney 60034 1 inch x 1 inch concave top cylindrical mounted grindingpoint is shank mounted and made from durable, high-grade aluminum oxide.Perfect for grinding, polishing or deburring ferrous metals or other hardsurfaces. Especially useful where larger wheels will not fit or where smallabrasive wheels wear out too quickly. Forney Industries is one of Americaslongest operating family-owned metal working product companies. Founded in1932, Forney offers more than 5,000 products for the hardware, automotive,farm & ranch and do-it-yourself markets. For more information, visit If youve got metal working questions, weve got answers.Were committed to your success regardless of location size or needs. Pleasecontact our team at 1 inch (25.4 mm) x 1inch (25.4 mm) with 1/4 inch (6.35) shank mounted grinding point. For use on1/4 inch (6.35 mm) chuck high speed drills. 35,510 Max RPM. Claims forwarranty must be made within 90 days of the date of purchase. Proof ofpurchase required. This warranty does not cover any product that has beensubject to misuse, neglect, negligence or accident, or that has been used inany way contrary to the purpose intended.