Crushproof FLT300 Flarelock Exhaust Hose 11 Foot X 3 Inch Crushproof 3" x 11' Flarelock Hose No wire helix - Crushproof so even the heaviest vehicles won't smash it Has male and female end so two hoses can be connected to make a longer length More heat resistant and flexible than standard hoses up to 600 degrees F Hose has a 5/32" thickness