Shotgun shell overflow tanks

Yes.  We know its a bit ridiculous but we loved designing this shot gun shell themed overflow tank. 

They have polished brass ends, 2" diameter, ribbed wall.  We painted this one red but decided we'll send them with polished caps and you can select the color red, maroon, blue or  whatever you like Made in the USA

Should the system pressure exceed the cap’s rating, the spring will compress and fluid will flow through the upper tube to fill the chamber.  

In the event the recovery tank reaches capacity, the fluid will find the second tube and exit to the street.  A vacuum will draw the coolant back into the cooling system as the engine cools down.