The high temperature 2 - PLY reinforced silicone straight coupler is designed to connect to a (3 x 2 - 12)OD tube. The coupling is 3 long with a 90 degree bend reducer. Standard stainless steel worm - gear 044 048 clamps provides tight connections, durability, and is corrosion resistance for industrial, commercial, truck, off - road, and racing applications. NOTE Not for use on pressurized side of supercharged or turbocharged applications.