Here is a very helpful item. This is a new in the package rings set for the 1980 1981 Honda C70 models.  This is a standard size 47mm (STD) ring set.  Hard to find item. This has the 2 compression rings and the lower 3pc oil control ring, everything to get your piston compression back where it should be.   Correct replacement for part # 's 13001-116-004. Get your old bike up and running again. We only sell the best! This is a top-quality aftermarket item.   That is it! We look forward to doing business.