Tiger® Zirc 9 in type 27 depressed center combo wheel are designed to deliver exceptional durability and a fast cut rate for performance you can count on. 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. Sharp and durable zirconia alumina abrasive grain cut smoothly and hold up in the most challenging foundry cleaning room application. 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. Tiger® Zirc, a high performance abrasive solution for foundries. Tiger® Zirc Grinding Wheel, Fast Cut Long Life High Performance, 9 in Wheel Diameter, 1/8 in Wheel, Hub Connector, 30 Grit, Z30T Grade, Wheel Type Number: Type 27, 6650 RPM Maximum, Resin Bond, Applicable Materials: Armored Steel/Cast Iron/Cast Steel/Ductile Iron/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