COOL-AIR-TUBE HEAT SHIELD Protects air intake tubes from damaging radiant heat to keep induction air cool Blocks over 98% of the radiant heat from the exhaust Aluminum-coated texturized silica fabric withstands up to 2000° heat Unique lace-up design keep heat shield secure. Fits 2-1/2" to 4" diameter air tubes up to 36" long. Includes white, blue, red and yellow laces.