Tiger Ceramic, 58310, Depressed Center Cutting Wheel, Performance Line Superior Life and Cut, 6 in Wheel Diameter, 0.045 in Wheel, Quick-Change Connector, 60 Grit, Medium Grade, Ceramic Alumina Abrasive, Wheel Type Number: Type 27, 10200 rpm Maximum, Resin Bond, Applicable Materials: Tool Steel, Inconel, High Nickel Alloy, Titanium, Armored Steel, Stainless Steel and Hard-to-Cut Metals, 5/8-11 Center Hole Thread, Specifications Met: ANSI B7.1-2010