Oregon Ref. 203SLGD025, GB SN20-63SH, Stihl 3003 000 6821, Stihl 3003 002 7021Stihl 024, 026, 028, 029, 031, 032, 034, 036, 036QS, 039, 040, 041, 042, 042AV, 044, 045, 046, 048, 056, 064, 066, E15, E20, E220, MS240, MS260, MS261, MS261C, MS270, MS270C, MS271, MS271C, MS280, MS280C, MS281, MS290, MS291, MS291C, MS310, MS311, MS340, MS341, MS360, MS360C, MS361, MS361C, MS362, MS362C, MS380, MS381, MS390, MS391, MS440, MS441, MS441C, MS460, MS461, MS640, MS650, MS660, MS661 and MSE220Packaging Type: Branded sleeve, Pitch: .325", Drive Links: 81, Bar Type: Laminate sprocket nose, Length: 20 ", Gauge: .063