20" Replaceable Sprocket Nose Bar / Silver Streak R3502072-4025SSPack Size:1Carlton 20-42-A172-ST, Carlton 20D025A1PS, Carlton 20-81-A172-ST, Carlton 20D009A1PS, GB SN20-50PA, Oregon 200RNDD025, Oregon 200RNDD009, Windsor 214050STA, Windsor 20EM50STALaser 41031, NHC 075-2027, Rotary 4706, Rotary 10576, Sandvik 214050STA, Stens 075-202, Tilton T202PV4Stihl 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: 72, Length: 20 ", Pitch: 3/8", Type: Replaceable Sprocket Nose