This is a new in the package Piston Ring Set  (this is for the pair pictured..so you get 1 complete set for each piston..so 2 sets) for the  1968 1969 1970 1971 1972 1973 1974  Honda CB450  and CL450 Scrambler.   These were the now famous twin cylinder, DOHC, four-stroke Hondas.  This is a standard size (STD) ring set. .  This has the 2 compression rings and the lower oil control rings 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.  #13011-292-000.  Good stuff if you are riding or restoring or AHRMA racing one of these cool bikes.  That is it!