Powder-coated finish Quick-Couple/Hexafix™ connecting shaft Smoothly rotating continuous guard ring Strong welded joints Heavy Duty 3-Blade Paddle--Large Batch Bottom-up Mixing. Rugged professional mixing tool three mixing blades for fast results mixing action from the bottom up. Area of operation: For all heavy and highly-viscous materials, like all types of mortar, plaster, screed, concrete, heat-insulating plaster, etc. Target groups: Bricklayer, plasterer, screed layer, renovation .