The Reverse-A-Clean IV Hand-Tight Guard helps to eliminate paint build-up, dripping and spitting. It also helps to provide safer spraying at higher pressures. s finger grip design makes it easy to attach or remove without the need for tools. Fits all Graco Airless Spray Guns with a 7/8 In. thread. Use with RAC IV Spray Tips. Thread Size: 7/8 In. Maximum Working Pressure: 3000 psi Color: Orange Will be: WARNING Cancer and Reproductive Harm www.P65Warnings.ca.gov. -