The Generac 6129 Ergonomic Replacement Spray Gun is rated up to 3100-PSI and has a longer barrel which provides extra stability. The Generac 6129 is made with a thick padded cushion grip with an easy-to-pull reverse trigger which provides greater comfort and reduces fatigue during cleaning. The male M22 threaded connector fits many brands of pressure washer and requires an M22 female thread for wand end and an M22 threaded lance (sold separately). Replace or upgrade your spray gun with the Generac 6129 Ergonomic Spray Gun with insulation and fatigue-free design to alleviate the numbing effects of continuous use. The Generac 6129 Pressure Washer 3100-PSI Ergonomic Replacement Spray Gun comes with a limited 90-day warranty. Generac manufactures the widest range of power products in the marketplace including portable, RV, residential, commercial and industrial generators. At Generac, we protect the things that power your life by providing quality, affordable power solutions.