DOP21BPX078GHU Loop-Saw Chain. 20 Series MicroChisel® .325 Pitch, .058 Gauge, 78 Drive Links. Fits Husqvarna model 133, 140, 140S, 154, 234, 238, 240, 242, 242XP, 246, 254, 254XP, 33, 340, 340E, 345, 346, 346XP, 346XP E-TECH, 346XPG, 350, 351, 353E-TECH, 353G E-TECH, 359, 360, 38, 40, 435, 435E, 44, 440E, 444, 445, 445E, 45, 450, 450E, 49, 50, 51, 55, 57 Chain saws. Replaces 34SL078G.