DESC: The SRM20F Mixer is the free-standing version of our enormously popular SRM20 counter model. Like all Univex Mixers, the SRM20F uses a power-efficient variable speed transmission that enables the operator to change speeds without having to first stop the mixer. This advanced technology utilizes torque-sensing pulleys to extract a greater torque-to-horsepower ratio with fewer parts. A rugged gear train drives the beater head and PTO shafts.