Humm! I just ordered 415 master and 1/2 links too.
Did not receive them yet. Maybe today.
The kit I have said 415 chain. So I will see when it comes in and let you know .
I know there is a H D 415, maybe you got that one.
Sorry I can not help much. Ken. Keep looking up!
Aha those three little words that just make you giddy all over!
(Out for delivery)! Will have mine in a few hours .
I just relooked at my order, it says 415H, So I think I will be in the same boat with you! Oh well, live and learn. Ken.