MS201T, MSA200, MSA220, MSA220T. This is a Stihl. Part # Stihl 3005-810-4417. Will fit on a Stihl MS194, MS194T, MS201. Length: 18", Pitch: 3/8", Gauge: 0.043", Drive Links: 61. Note: Type J8E2 in the search box to find the matching.
eBay