Three Arm (side, corner, bottom) slow RPM mixer for heavy materials. Very robust design. Nearly all-metal construction. Build on a hand-truck chassie, with additional wheels near handles to roll into the back of a pick-up truck. Technical Data: Size of mixing tub 26 gal. Max. effective mixing volume 20 gal. / 2 cu ft. Power supply 110 V / 15 A. Power 2.7 hp. Three Arm-Speed mixing tool 30 rpm. For high-viscosity materials including concrete, many types of mortar, plasters, cements, stucco. Not suitable for thin flowing materials.