18" Replaceable Sprocket Nose Bar / Silver Streak R2501874-4025SSPack Size:1GB SN18-50PJ, Oregon 180RNBD025NHC 075-3317Stihl 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, MS362, MS362C, MS380, MS381, MS390, MS391, MS440, MS441, MS441C, MS460, MS461, MS640, MS650, MS660, MS661 and MSE220Pitch: .325", Drive Links: 74, Gauge: .050, Length: 18 ', Type: Replaceable Sprocket Nose