This is a new Piston Rings set for the now vintage 250 Suzuki models .. the TS250 Savage ( 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981) and the TM250 Champion (1972-1975) and the 1 year only DS250 (1980). This is a standard size (STD) ring set which is correct replacement for  70mm Standard bore pistons. Correct replacement for #12140-15012 and 12140-30010.     Everything to get your piston/ engine running nicely again.  Very helpful and hard  to find item!  Get your old bike up and running again. We only sell the best!  Good stuff if you are riding or restoring or  racing these cool bikes.