Graco 243011 Airless Spray Gun, SG2 Thumb engaged safety lock allows you to lock the handle when not spraying for safety Maximum operating pressure of 3,600 PSI Replaceable in-handle paint filter reduces tip clogging and improves the finish Replaceable gun needle keeps maintenance simple For use with Magnum and Graco paint sprayers Ideal for homeowners and DIYer's for spraying a variety of coatings including primers, stains, varnishes and latex