High-powered router motor generates five speeds: 10,000, 13,000, 16,000, 19,000 and 21,000 RPM * 3-1/4 HP peak ensures consistent speed * Completely sealed ball bearing construction for durability * This item comes with a 1/2 inch Collet and also the Collet Wrench * Can replace motor in Router Model 7518; also works with 7500 Series Fixed Base Model 75361