2 Caps, Pail Can, One-Gallon Can, Lid, Sealing Ring, Protector, Lid, Lock

Set of 2 new caps compatible with common 4L cans, oil cans, and pail cans.
Fits openings with a 40-type diameter (outer diameter 40.8mm).
These are new items purchased in bulk, not removed from cans.

Includes cap and sealing ring (protector).
Use for oil cans, pail cans, etc.
Not compatible with 50-type (outer diameter 48.8mm) cans, so please confirm compatibility.