Our Aerosol Can Puncturing Pin is designed specifically for the J-7 Aerosol Can-Emitor. It is made of steel, approximately 2 1/2” long, and makes a 3/16” hole when puncturing an aerosol can. Built to last for the life of the Can-Emitor, the tip of our aerosol can puncturing pin can be resharpened if it becomes dull. In the event that you need to replace the puncturing pin, simply unscrew the damaged pin and screw the replacement pin onto the end of the puncturing Handle Assembly.