This is the Team Integy Silicone Tube Exhaust Coupler in Blue.
FEATURES: For 1/8 scale vehicles
Installs between tuned pipe and exhaust manifold
INCLUDES: Silicone Tube Exhaust Coupler with two Zip Ties
SPECS: Length: 1.5" (37.5mm)
Inner Diameter: 0.63" (16mm)