Features: Made of High quality rubber, this quick intake adapter is an inflatable block off bladder with a pressurized vapors pass-through for quickly and easily testing. It is an inflatable block off bladder with a pressurized vapors pass-through that allows technicians to test an entire intake or exhaust system quickly and easily. With inflatable block off bladder, it can reduce workloads in a leak check, compatible for diagnostic leak detectors of most automobiles. Conform to various shape of intake / exhaust: Round, ovals, square, rectangular and even severely angled and hard to reach intake / exhaust system. Inflatable block off bladder and a pressurized vapors pass through allow technicians to test an entire intake or exhaust systemsquickly and easily. Specifications: Material:Silicone Size:As Picture Shown Color:Black Package Includes: 1 Set Smoke Machine Bladder note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. ②.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.