Porter Cable 7538 Porter Cable 7538 Speedmatic 3-1/4 Peak HP Plunge Router Model 753815 Amps AC only21000 RPM with soft start1/2" colletAuto-release collet system ends "frozen" bitsUnique design puts bottom bearing closer to work for minimum bit run-out and vibration3" plunge range with fully enclosed springsDepth rod and 6 position step turretPrecision machined aluminum motor housing & base100% sealed ball bearingsStandard Equipment: Router motor base 1/2" collet #42950 collet wrenches #42596 and operating manual