Large 4.5" filler opening makes filling and clean up safe and easy. Chemically resistant Viton¨ seals throughout. High-density polyethylene tanks with ultra-violet inhibitors, which allow for unmatched durability and ultra-violet protection. Automatic pressure relief valve releases excess pressure at 45 psi and may be used to release pressure as desired. Solo handheld sprayers can reach full pressure with about half the pumping required by other brands. Shut-off valve and wand overall length is 28" for hard to reach places. Four feet of high pressure hose for hard to reach places. Includes an assortment of four nozzles. Our toughest 3 gallon.