This is a new in the package Piston Ring set (1 set of rings for each piston) for the 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968 Honda 305 Superhawk CB77 model.  This is a standard size (STD) ring set which is correct replacement for #13010-275-000, 130101-275-000, 13012-275-000, 13010-275-300.   This has the 2 compression rings and the lower oil control ring for both pistons, everything to get your pistons/ engine running nicely again.   Get your old bike up and running again. We only sell the best! This is a top-quality aftermarket item shipped new in the package.