20 chainsaw saw chain 78 links 0.325 1.5mm 0.0058please ensure details listed match those of your chaindrive links number of links that sit in guide barpitch measure between 3 rivets divide by 2gauge distance between rails on guide barplease count the links on your existing chain before ordering to ensure correct chain length most chainsaws offer more than one bar length option, so chain size will vary too.suitable for the following modelsgardencare gc5020husqvarna 133 136 137 140 141 142 154 234 235 238 240 242 246 254 257 261 340 345 346 350 351 353 355357 359 360 444 450 455 460550xp 550xpg triobrake 555 560xp 560xpg el16 el2400 el1500 el1600 rancher 455 rancher 455ehyundai hyc3816,hyc4618, hyc5620jonsered el14, el1200, 45e, 49sp, 50, 52, 2014, 2015, 2016, 2012, 51, 370, 380, 410, 420, 425, 435, 450, 451evs, 452, 490, 455, 450, 451, 455, 510, 520, 521, 510, 520, 525, 535, 590, 2012, 2014, 2015, 2016, 2036, 2040, 2041, 2045, 2149, 2050, 2063, 2051, 2054, 2055, 2150, 2145, 2141, 2152, 2153, 2255, 2156, 2163, 2159makita dcs430, dcs520, dcs4300i, dcs5200i, dcs431, dcs520, dcs43001, dcs431, 45mitox 4518, 5020, 56cs pro, 6220, cs50 select, cs560x premium, 515csxpartner el1450, el1650, 400, 410, 460, 360, 450, 500, 5000, 405, 450, 470, 510, 540, 465, 400, 495, 510, 540, 500, 545, minifarmersaw, p500, p5000, p5500, 1200el, 1400el, 1450, 1500el, 1650, 410, 460, 510stiga sp460, sp510trueshopping jw5200chain equivalent to oregon 21, carlton k2c, stihl rapid micro, stihl 25rm, husqvarna h27, em s27, windsor 58j, homelite 32 m58, gb sabre, tsc, excel 528, dolmar 83, mitoxmior78ex21bpx