The high temperature 2 - PLY reinforced silicone 40 degree reducer coupler is designed to connect to a (4 x 3 - 12) OD tube and is 3 long. The coupling is 3 long with a 40 degree bend. Standard stainless steel worm - gear 056 and 064 clamps provides tight connections, durability and is corrosion resistance for industrial, commercial, truck, off - road and racing applications.