DESC: Model 7518 features: 15 Amps, AC only Electronic five-speed with soft start 10,000, 13,000, 16,000, 19,000, 21,000 RPM Maintains constant speed under load 1/2" collet Auto-release collet system ends "frozen" bits Unique design puts bottom bearing closer to work for minimum bit run-out and vibration Precision machined aluminum motor housing & base 100% sealed ball bearings Standard Equipment: Router motor #75182, base #75361, 1/2" collet #42950, collet wrenches #42596, and operating manual Power 120 VAC, 60 HZ Shipping Weight 18 Lbs. Peak HP 3 1/4 Rated Input Current (Amps) 15 Motor Diameter 4.2" No-Load Speed (RPM) 5 speed with soft-start 10,000, 13,000, 16,000, 19,000 and 21,000 Collets Standard: 1/2" Available: 1/4" & 3/8" Width 11" Base Dia. 7"