(AES# SW-GLD053)From the makers of the Smoke Wizard...The Plug-it Inflatable Bladder is a universal adapter for testing intake and exhaust systems and can be used with any model of smoke machine and/or decay gauge.It works great for odd sized intakes and can expand to seal openings as large as 6 inches (152m) and conforms to practically any opening shape.The Plug-it is field serviceable and comes with an extra bladder.The Plug-it Inflatable Bladder features a Through-hole to apply pressure or vacuum.The Plug-it Inflatable Bladder is made out of molded EPDM to provide consistent expansion over time ensuring a great fit. EPDM has several advantages over neoprene: · EPDM provides better protection from UV and heat · EPDM reduces cracking and wear and tear · EPDM provides a more consistent expansion over time · EPDM handles temperatures up to 375oF/190oC. EPDM is also stronger than natural rubber.The Plug-it Inflatable Bladder is molded not extruded. · Allows for a more even wall thickness, reducing chances of a bladder failure due to a blow-out. · Even bladder wall provides a more consistant bladder expansion.The Plug-it Inflatable Bladder is field serviceable. · You can replace just the bladder instead of the whole tool if the bladder does break · Kit includes an extra bladder.Contents - Plug-it Inflatable Bladder with Through-Hole - Extra Bladder - 1-year warranty