Deflagrating Spoon and Cap (Combustion Spoon with Protective Collar)

Deflagrating Spoon and Cap, also called Combustion Spoon, here enriched with metal cap. A combustion spoon is a long-handled spoon to be used among others in gas jars - in such case, it is lowered into a glass vessel filled with a gas to demonstrate combustion.
This version has a protective metal cap (collar) in which the rod of the spoon is held by cork or rubber. The cap can be moved along the spoon rod. It is also shaft shaped to prevent contact with lab glass wall.