STIHL 26RS 81 Rapid Super Chainsaw Chain 20" Bar .325 pitch .063 gauge Only Fits 20" Bar Farm Boss Series, Stihl Chainsaw Models 024, 026, 028, 034, 036, MS241, MS260, MS261, MS270, MS271, MS290, MS291, Genuine Stihl Chainsaw Chain Please Check Your Stihl Bar to Verify Correct Chain 20" Bar .325 pitch .063 gauge