Roundup Extended Control Weed and Grass Killer RTU Liquid 1.33 gal Flatbed Trailers ) 5 Project Type Air ) 5 Project Type Air Tool Combos Returnable 180 Day Tools Product Type Air Tool Kit Recommended operating pressure (psi) 90 Air consumption at recommended operating pressure (CFM) 33 Number of pieces included 3 Product Width (in Comfort is at the forefront in our user focused design guaranteed The dual action formula of Roundup® Ready To Use Extended Control Weed & Grass Killer Plus Weed Preventer II with Pump ‘N Go® 2 kills existing weeds and prevents new ones from growing for up to 4 months—and it kills them down to the root