Our silicone hose is built for endurance and performance in custom coolant and intake plumbing applications. Each hose is hand-crafted from multiple layers of silicone rubber with polyester reinforcing fabric between the layers. The silicone rubber remains flexible and tough from -50° C to +180 degrees C (-76 degrees F to 356 degrees F). This Stealth Black 90 degree elbow has a 1 1/4" ID with a smooth, shiny "wipe-down" finish. The legs measure 150mm (5.9") long (measured from the centerline of the opposite leg). The 3-ply reinforcement results in a working pressure rating in excess of 40 psi and a 4.5mm wall thickness (41mm / 1 5/8" OD). Use our Hose Joiners (HJ32) and our Lined Hose Clamps (Part No. 3613-2.00) to construct the exact shapes you need. Note: This hose is NOT formulated for use in oil or fuel plumbing applications. It will handle an air-fuel mixture and will survive occasional spills and oil leaks, but it will not stand up to continuous exposure to liquid petroleum.