Our patented chain feed delivery system is a positive drive mechanism that accurately and consistently delivers the dry materials to the mix auger. The Zim-Mixer is the only machine that allows for all of the ingredients, dry or liquid, to be run individually while loaded, enabling the mixer to be quickly and easily calibrated as well as off loaded without cross contamination. Our patented system also allows sand, stone, grout, or even pervious concrete to be delivered or produced at any time.