New one piece Flathead Ford valve guides.  Set of 16.  Correct for 1949 - 1953 Flathead Ford V8.  Can be used to convert 1932 - 1948 (except V8-60) to solid guides using straight stem valves and 49 - 53 valve spring retainers.  The one piece guides with the late valves usually offer better oil control and easier installation compared with the split guides. 

Ford part number 8BA-6510-A