Piston ring set for Minispares special P20950 998CC Flat top pistons standard size. Rings are 1.59mm (1/16") and 3.175mm(1/8") oil control ring.
Top ring and second ring are the same and universal (i.e. can be fitted either way up) . The 2nd ring set are spares if provided. Third ring is a stepped 'scarper' type ring (needs fitting with the 'step' downwards facing). Fourth is obviously the oil control ring.