Fits Models: STIHL 046, MS 660, MS 240, MS 271, MS 271 C, MS 291, MS 291 C, MS 441, MS 441 C, MS 880, 034, MS 260, MS 260 C, MS 340, MS 440, BT 121, 066, MS 460, 036, MS 650, MS 270, MS 270 C, MS 280, MS 280 C, BT 106, 084, MS 311, MS 391, MS 362, MS 362 C, 036 QS, MS 360 C, 088, MS 260, MS 260 C, 044, MS 780, 029, 039, 024, MS 341, MS 360, MS 640, 026, 064, MS 261, MS 261 C, MS 241 C, BT 120 C, MS 361, MS 361 C, 026, MS 290, MS 310, MS 390 Chainsaws