Yes. But I can't remember. I've gotten mine from the chainsawguy on Ebay from Canada www.thechainsawstore.com and he is great to deal with. Someone else was selling them from a US address, but I can't remember who that was. There was some mimimal difference in availability 0.063 vs. 0.050. I don't think there is much price difference.
Heck this is an old thread, I stocked up before the saw shop was sold. Probably never have to buy a bar again, Picked up a LOT of chain too.
So i put the Tsumura bar on today, and wow! Now the chain spins freely, a noticeable difference compared to the original one that came with the say. Thanks for your input and thanks to thechainsawguy for great service and a great product!