Hose is designed to direct air from front mounted air ducts to spindle ducts for brake cooling. Flexible, non kinking hose is available in 10 ft. lengths. 300 degree - 3" or 4" double ply neoprene coated woven fiberglass hose with a spring steel wire inner and an external fiberglass cord support. Smooth inner wall for unrestricted flow.Pit Stop USA offers Allstar Performance 3" Double Ply Neoprene Coated Woven Fiberglass Brake Duct Hose - 300 Degree Rated - 10 Ft. ALL42151 at low everyday prices. Be sure to check out all of our products from Allstar Performance including Allstar Performance Brake Duct Hose.