100 percent brand new. main material: aluminium application: universal fitment for all vehicles models make your vehicle sound like a turbo vehicle with the turbo system or blow off valve. length x diameter: approx. 12 x 3.1cm / 4.7 x 1.22inch installation: 1. loosen the bolt on the turbo sound whistle. 2. insert the turbo sound whistle into the tailpipe. 3. tighten the bolt so as not to fall off while driving.