No more accidentally knocking your hopper off the chute and spilling pellets all over the floor, baby! Added flanges to the chute with two screw holes. Just screw the hopper to the chute and smile. There are two versions, I needed the one with the shortened cylindrical base for Filastruder no. 787. Check to make sure which one you need. I just ended up chopping the extra bit on mine to make it fit when I realized the problem before creating the modified STL. Just use the original hopper from http://www.thingiverse.com/thing:109650