This small 3D-printed bottle is detailed with a regulator on top.
It will fit next to the FC, P/M or P/S driver's seat and used as an oxygen source.
It could be a small NOS bottle for a street machine.
A couple could be placed in the front and rear for fire extinguishers.
In street rods, old school cars and customs, it would sit on the floor (or transmission tunnel) as a fire extinguisher.
Diameter - .14"
Total Length - .43"
One 3D bottle, by , 1/25 scale.