18" Replaceable Sprocket Nose Bar / Silver Streak R2631874-4025SSPack Size:1Carlton 18-42-A366-ST, Carlton 18D025A3PS, GB SN18-63PJ, Oregon 183RNBD025, Windsor 184063STANHC 075-1807, Sandvik 184063STJ, Tilton T207SR2Stihl 024, 026, 028, 029, 030, 031, 032, 034, 036, 036QS, 038, 039, 040, 041, 042, 042AV, 044, 045, 046, 048, 056, 064, 066, E15, E20, E220, MS240, MS241, MS241C, MS260, MS260C, 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 MSE220Pitch: .325", Drive Links: 74, Gauge: .063, Length: 18 ", Type: Replaceable Sprocket Nose