FTI / Finish Thompson TM Drum Barrel Mixer for medium viscosity liquids. The TM Series Drum Mixer is a 4-blade, turbine drum mixer ideal for mild corrosives, solvents, or flammables of light to medium viscosity. Features: Top-to-bottom mixing action, Non-aerating, non-vortexing circulation, Loosens and suspends bottom sediments, Handles corrosive materials, Pump tubes interchangeable with motor selections, Up to 1000 cP with electric or air motor.