(BF, TBBF) Available for both our regular and Tallboy pumps, these aluminum and stainless steel attachments are tough and effective. The Box Filler makes filling your Flat Boxes, Nail Spotters and Corner Boxes a dream. FEATURES: Attaches to either Columbia Mud Pump to fill boxes Hand made from U.S. billet aluminum and steel components Machined in our state of the art facility in Canada DOWNLOADS: MUD PUMP BOX FILLER SCHEMATIC 2019 MUD PUMP BOX FILLER SCHEMATIC 2014