Our Springs Plunger ensures that the top lid of the J-7 Aerosol Can-Emitor does not lift up during the aerosol can puncturing and depressurization process. Made of steel, the springs plunger is threaded to the lid of the Can-Emitor and securely mated to the steel guide rod, ensuring a locked seal when the lid is closed. Each springs plunger is approximately 1.5” long with a 1” diameter head.