Jonsered 18" Oregon Chain Saw Repl. Chain Model #2050, 2050 Turbo, 2051, 2054, 2055, 2149, 2149 Turbo, 370, 410, 420, 425, 435, 45, 450, 451, 455, 49, 50, 51, 510, 52, 521, 525, 535, Cs2145, Cs2149, Turbo, Cs2150, Cs2152 W, Cs2153, Cs2156, Cs2159, Cs2159c, Cs2159wh, Cs2163, Cs2245, Cs2250, Cs2250s, Cs2255 (2072) Fits Saws Listed That Use a .325 Pitch .050 Guage Chain with 72 Drive Links Sold on Amazon