AEROSOLV® Standard system includes puncturing unit with plastic sleeve, color changing coalescing/carbon filter cartridge, anti-static wire and goggles to enhance safety. Puncturing unit relieves pressure and empties spent aerosol cans. It is made up of low maintenance aircraft aluminum and threads into standard 2 inch bung on 30 and 55-gallon drums. All moving parts are stainless steel carbide tipped piercing pin.