Tiger® Ceramic 9 in type 27 depressed center combo wheel deliver the next evolution in technology for portable foundry grinding. The bond is formulated to eliminate uneven edge breakage or chipping on the wheel edge. This technology advancement improve operator safety by reducing high energy debris during the grinding process, eliminate the need to dress the wheel to regain a workable edge and provide longer wheel life and increased consistency. The ceramic grain leverage an engineered ultra fine microstructure that self sharpens for ultra fast grinding. Along with the high metal removal rate, the low specific cutting energy of Tiger® Ceramic result in a significant increase in product life. Combination wheel offer flexibility and efficiency when switching between cutting and grinding application. The 1/8 in thickness make them ideal for light grinding application as well as blending parting line, removing flash and cutting gate and risers with a right angle grinder. Increase production efficiency, reduce downtime and lower overall process cost with Tiger® Ceramic. Tiger® Ceramic Grinding Wheel, Long Life Maximum Performance Superior Cut, 9 in Wheel Diameter, 1/8 in Wheel, Hub Connector, 30 Grit, CER30T Grade, Wheel Type Number: Type 27, 6650 RPM Maximum, Resin Bond, Applicable Materials: Armored Steel/Cast Iron/Cast Steel/Ductile Iron/Hard to Grind/High Nickel Alloy/Inconel/Stainless Steel/Steel/Titanium/Tool Steel, 5/8-11 UNC Center Hole Thread, Wheel Hardness: T, Black Wheel, Reinforced: Yes, Specifications Met: ANSI B7.1