Stihl 16" ISE Chain Model #ms018, 021, 023, Ms 180, Ms 181 Ms 190t Ms 192t, Ms 200, Ms 200t, Ms 210 Ms 211, Ms 211c, Ms 230 Ms 250, Ms 250c (oregon equivalent 9155) saws 3/8" .050 55Links... Highest quality replacement chain replaces Stihl Chainsaw Chain- - 16 Inch, 55 Drive Links, 3/8 low profile Pitch, .050 Gauge