3.00" I.D. x 3.00" long black 4-ply aramid reinforced straight coupler rated for 35 PSI. Common size for many turbo and intercooler setups.3" I.D. x 3" long4-ply black silicone35 PSI max
2.50" I.D. x 3" long black 4-ply aramid reinforced straight hose coupler rated for 50 PSI. Popular size for intercooler and charge pipe connections.2.50" I.D. x 3" long4-ply black silicone50 PSI max
1.25" I.D. x 3" long black 4-ply aramid straight coupler rated for 93 PSI. Smaller diameter for tighter plumbing needs.1.25" I.D. x 3" long4-ply reinforced93 PSI max