Offers precision control with 100:1 adjustment range. Use direct-drive shaft for high speed mixing or geared shaft for high torque (up to 140 in.-oz.) mixing. Maintains constant mixing speed despite load changes and fluctuations in power line. Separate, solid-state controller has 6' cord, ensuring that electronics are kept at a safe distance from corrosive mixtures. Completely enclosed 1/25 hp, permanent-magnet gear motor is non-vented, and has permanently-lubricated ball bearings. Gear reduction is 20:1. Mixer uses Jacobs-type chuck with key for both direct-drive and gear shafts. Accepts 1.5-10 mm (1/16-3/8"") stir shaft. Comes with 6"" support rod, chuck and grounded plug. Stand shown is not included. Motor measures 5.75""H x 3.5"" diameter, controller measures 7""W x 3 3/16""H x 4 7/8""D. Shipping weight: 3.2 kg (7 lbs). For 115 volt, 50/60 Hz. Warranty: 2 years.