SWIFT SIX AGG WORKS LLC * Feeders are constructed of 11 gauge 8" X 2" tubing skids and 2"X 2" rolled square tubing which forms the "rib cage" cradle for the #9 x 3/4" expanded metal basket. Units are mig welded and hot dip zinc galvanized to 3+ mil thickness to conform with the American Galvanizing Association Standards. For additional information regarding the process of galvanizing and and what you the consumer can expect visit www.galvanizeit.org/about-hot-dip-galvanizing/what-is-hot-dip-galvanizing. * Feeders are equipped with skids, welded D-rings, lift eyes and fork lift tubes to allow the unit to be pulled, lifted, or loaded from one trap to another. Convenience does matter.