The Porter-Cable 690LR 1-3/4 Peak HP Router tools features an increased horsepower up to 1-3/4 and the incorporation of new one-handed lever-release height adjustment. A dust proof switch and larger, more ergonomic handle is added for better control. The Porter-Cable 690LR features a precision machined aluminum motor housing and base, 1/64 inch micrometer depth-of-cut adjustment, 100% sealed ball bearing construction and 1/4 inch and 1/2 inch auto-release collets to ensure bit changes are as smooth as the router itself.