New Old Stock piston ring set Ford 254 c i Flathead 6 cylinder, 1948 - 1954 used in trucks.  For bore 3.500 at STD.  Ford part number 8MTH-6149-A, in original Ford packaging, top ring is chrome faced.  This is a Steel Section Type Ring Set.

Note: we have one set this size with is labeled BOT-6149-AAA which replaces the 8MTHS prefix and also has a chrome face top ring.