Hello, up for auction today is a set of NOS rings for the Continental W-670 Radial engine. 
The compression rings are standard, the oil control rings are +.010 which can be filed down to standard, and the scraper rings are standard.
This would be excellent to set up on the shelf for when needed or if you’re looking for a set for you overhaul or cylinder change.
Buyer to determine airworthiness and application.
Thanks for looking and happy bidding.