18" Replaceable Sprocket Nose Bar / Silver Streak R3501866-4025SSPack Size:1Carlton 18-42-A166-ST, Carlton 18D025A1PS, Carlton 18-81-A168-ST, Carlton 18D009A1PS, GB SN18-50PA, GB SN18-50MG, Oregon 180RNDD025, Oregon 180RNDD009, Stihl 3003 000 8917, Windsor 184050STA, Windsor 18EM50SYALaser 41029, NHC 075-1817, Rotary 4786, Sandvik 184050STA, Stens 075-520, Tilton T201PV4Stihl 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 MSE220Gauge: .050, Drive Links: 66, Length: 18 ", Pitch: 3/8", Type: Replaceable Sprocket Nose