DOP72V066GPO Loop-Saw Chain. 70 Series Vanguard™ Chisel Chain. 3/8" Pitch .050 Gauge 66 Drive Links. Fits Poulan/Poulan Pro model 203, 245, 306, 306 A, 330, 3350, 3400, 3450, 3500, 360, 3600, 361, 365, 3650, 3700, 375, 3750, 380, 3800, 3900, 395, 400, 4000, 405, 415, 4200, 425, 4400, 445, 446, 450, 455, 475, 4900, 505, 5200, 525, 5400, 5500, 655, 6700, 6900, 7700, 8500 Chain saws.