Spectre 9705 4" Polished Aluminum MAFS Adapter Tube Reviewhttp://tinyurl.com/llkk3zv Spectre 9705 4" Polished Aluminum MAFS Adapter Tube Used to create a custom air intakePolished aluminum body with ABS componentsFor use with drop-in mass air flow sensors on '04 and later vehicles with 3-1/4 In. x 4 In. diameter MAF tubesTuning components are ABS construction