Chain sprocket cover bar nut,<b> Compatible with STHIL</b> 010 011 012 024 026 028 029 030 031 032 034 036 038 039 041AV 042 044 046 048 064 066 Chainsaw<br><b>Compatible with STHIL</b> 017 018 020 020T 021 023 023L 025 MS170 MS170C MS180 MS200 MS200T MS210 MS230 MS250 Chainsaw<br><b>Compatible with STHIL</b> MS171 MS181 MS192T MS211 MS231 MS251 MS291 MS311 MS361 MS362 MS391 MS441 MS461 Chainsaw<br> <b>Compatible with STHIL</b> MS240 MS260 MS270 MS280 MS290 MS310 MS390 MS340 MS360 MS360C MS440 MS460 MS640 MS650 MS660 Chainsaw<br> <br><b>Package include</b>: 6pcs bar nut