Oregon bar and chain combo part # 105671. This bar is a 20" bar with a .325 .063 81 drive link chain. This bar and chain combo will work on several different mid to large size stihl chainsaws as long as it has a .325 sprocket and not 3/8. The bar will fit Stihl 024 026 029 031 032 034 036 along with the newer MS series like the MS290 MS310 MS340 MS360 and others.