Here is 1 brand new 16" Oregon chain. 21BPX066G. Retail is $25.52 each for this chains. It has blued cutters for improved strength. Faster Cutting than before- New X grind on teeth for faster speed even when boring and undercutting. Micro chisel cutters. Low-Kick.These chains fit the most of Jonsered 2050, 2050 -turbo,2051,2054,2149,410,420,425, 435,45,450,451,455,49,50,51,510,52,521,525,535,CS-2150,2152,2153,2245,2250,Husqvarna 50 51 55 39 44 340 444 and others. The chains are .325 pitch .058 gauge and 66 drive links. If you have a k2 or 34 or 21 stamped on your drive link and there is 66 drive links like photo these will fit your saw. NOTE- These are .058 gauge and will not fit in a .050 gauge bar.