Bought this chain saw blade combination for a Tanaka TCS-3401S.  I merely sought to extend the range of possibilities for this remarkable little chain saw.  Had used the 12 and 14 bar sizes before (from Oregon as well.)  This particular 16 grouping fit the Tanaka perfectly and, as one has come to expect from the Oregon brand, the performance is exceptional.  Sadly, during this harsh New England winter, I have had to use the chainsaw more often than expected (or hoped for).  Nevertheless, the saw performed brilliantly, cut smoothly and effortlessly, and remained sharp much longer than projected (in view of the moist, snow- coated timber.)  First-rate saw blade combination.