This is a NEW OLD STOCK dipstick that is made for a 1965 to 1967 Cadillac Deville with a 429 engine.
This is also for a 1965 to 1966 Eldorado with a 429 engine.
The pictures show the full length and the length of the part that fits the tube.
They may fit another male or model car or truck
These were found in a box of old parts inventory.