Spectre's Stainless Steel Heater Hoses are available in either a 5/8 inch or 3/4 inch diameter and feature 4 Ft., 6 Ft., 10 Ft. or 25 Ft. length variations. Manufactured using high quality materials this heater hose was designed to resist temperatures over 250 degrees and is constructed using a nitrile rubber hose and 304 grade stainless steel braid.