3-Ply Reinforced Black Silicone: Constructed of 3-ply reinforced silicone, this torque boost tube is resistant to cracking and hi-temp conditions. With a smooth interior surface, this torque booster tube is engineered to increase HP, Torque & air flow by reducing turbulence.Hassle-Free Installation: This torque booster tube connects the billet 3-angle adaptor on the Stage-1 system to the intake manifold. With two stainless steel clamps, this part is a quick and easy bolt-on, requiring no cutting or drilling on OEM parts for hassle-free installation.