Carborundum Silicon Carbide Grinding Wheel Size: 6 inches Thickness: 1″ Hole Diameter:1-1/4″ Hole Diameter with Bushing: 1/2″ Grit: 60, 80, 100, or 120 Maximum RPM: 4,130 Silicon carbide abrasive construction Suitable for grinding and sharpening applications Ideal for non-ferrous metals, carbide, glass, ceramics, and other hard materials Provides fast and efficient material removal Durable construction for reliable workshop use Suitable for bench and pedestal grinding machines