Echo / Shindaiwa OEM 2.5MM LIMITER CAP TOOL - 91075
Best 2 cycle for your trimmers and blowers.
I have found these chains to be the best for chewing through all the dead hardwood (oak & cherry mostly) I have.
Saw Suppliers did a good job of fallowing-up and communication to be sure that I got the guide bar nuts that I ordered. Will order from them again.