Wagner's Contractor Tough airless tips have a swiss-made tungsten carbide core with grey trade tip handle. Fits the newer model No. 9155 and 9145 paint sprayers. Will also fit Paint Crew and ProCoat sprayers. Use tip sizes .011 In. to .013 In. when spraying lacquer or varnish. Use tip sizes .013 In. to .015 In. when spraying oils, paints and stains, exterior oil primers, or latex and oil enamels. Use tip sizes .015 In. to .017 In. when spraying interior and exterior latex paints, 100% acrylic paints or solid latex stains. Tip wear has a big impact on the amount of paint used for a job. A worn tip reveals itself by producing a reduced fan width while the flow rate increases which results in more paint used to cover less area. The 411, 413, and 415 tips provide an 8 In. fan width. Tips will fit gun model No. GX-06, GX-05, and GX-07. Will not fit Optimus sprayers.