Set of 4 Replacement Springs for Traditional Post Boxes

The spring body is 20mm long, with an outer diameter of 8.7mm and a wire diameter of 1.4mm. It is suitable for rods with a maximum diameter of 5.5 mm, as well as rods with a smaller diameter.
Made of 304 stainless steel, it has good elasticity and corrosion resistance and is durable.
This spring is designed for traditional British door letterboxes (Letter Plate), ensuring that the mailbox door opens and closes naturally and smoothly, effectively preventing wind from opening it or sound interference.
Suitable for repairing and replacing old mailbox springs after they are loosened or broken, and to restore their original functions.
Each package contains 4 springs, which is convenient for replacing or replacing a double door.-