Product Weight: 0.08 oz (2 g); Package Size: Length: 4.9 inches (125 mm), Width: 1.8 inches (45 mm), Height: 0.4 inches (11 mm); Package Weight: 0.3 oz (8 g); Material: High Speed Uses: Grinding and sculpting wood, iron, aluminum, brass, etc.; Shaft Diameter: 0.00 inches (2.3 mm); Compatible with: All Proxon mini-routers and more. Comparable