Fits most bases. Long lasting tip orifice resulting in less wasted paint. Solvent-proof seals hold up against harshest coating. Spray tip 311 and 411 works with stains, sealers, lacquers, enamels. Spray tip 413 and 415 works with stains, sealers, lacquers, enamels, and interior latex. Spray tip 417 and 517 works with exterior enamels and latex. Spray tip 515 works with interior/exterior enamels and latex. Spray tip 519 works with exterior latex.