Centek Vernatube 1100 Series Premium High Temperature Fiberglass Marine Wet Exhaust Tube - 2 inch OD -Vernatube is smooth in the ID giving it low flow resistance. It is manufactured from new heat-resistant resins. It is fire retardant and self extinguishing. Designed for hotter than normal exhaust from some diesel engines and handling temperatures up to 350 degrees. SOLD PER FOOT.