Graco LTX521 RAC X SwitchTip, a reversible (clog-clearing) airless spray tip, part number LTX521, with a 0.021 in. (0.53 mm) orifice and a 10 in. (254 mm) spray fan width. Maximum working pressure 4050 psi (280 bar). The tip number 521 encodes the size: the first digit (5) doubled gives the 10 in. fan width and the last two digits (21) give the 0.021 in. orifice. The spray pattern size measured on the Graco page is 10 to 12 in. The reversible design lets the tip be rotated to clear a clog without removing it. For use with RAC X HandTite Tip Guard.