Exhaust Header Wrap 1in x 50ftExhaust wrap maintains hotter exhaust gases, decreases the density, and allows the exhaust gas to exit the system faster! Increased exhaust scavenging is produced helping to lower intake temperatures: that equals more horsepower.Features: Rated for 1200F continuous use, 2000F intermittent, Reduces under hood temperatures up to 50 percent, Increases horsepower, All rolls 1/16 inch thick, ; Size: 1" Wide x 50' Roll; Operational Temperature: 1200; Peak Temperature (30 seconds or less): 2000; Color: Off White; Material: Fiberglass