DOP72LGX066GST Loop-Saw Chain. 72 Series Super Guard® Chisel Chain. 3/8" Pitch .050 Gauge 66 Drive Links. Fits Stihl model 029, 030, 031, 032, 034, 034 Super, 036, 036 PRO, 036 QS, 038, 038 Super Magnum, 039, 040, 041, 042, 044, 044 Magnum, 045, 046, 046 Magnum, 048, 056, 056 Super, 064, 066, 066 Magnum, E15, E20, E220, MS 200, MS 290, MS 310, MS 341, MS 360, MS 360 C, MS 360 Pro, MS 360 QS, MS 361, MS 361 C-B, MS 361 QS, MS 362, MS 390, MS 440, MS 440 MAGNUM, MS 441, MS 441 C, MS 460, MS 460 MAGNUM, MS 650, MS 660, MS 660 MAGNUM, MS E220Q, MSE 220 Chain Saws.