Aero Exhaust 1.75"-2" Black Silicone Straight Reducer 3 Ply You can cut silicone parts down to fit with a razor knife or PVC pipe cutter Heat tolerance: -40deg; to 392deg; Fahrenheit Burst Pressure: 100 PSI Working Pressure: 32 PSI Wall Size: 3 mm-4 mm Compatible with antifreeze/coolant