Hypereutectic are the ones to get.
Hypereutectic rings?
I said the same thing when my machinist recommended them to me. lol They are a very strong and durable set of rings...basically called "Iron Hypereutectic Rings" They are easy sealing and you can twist then almost three times before they snap. I bought a set for my ross pistons and man...they are nice. There's alot of rings with Hypereutectic added to the name.
