Designed for use with larger gas vehicles and diesel trucks. Add wire to resist kinking using the "W11" suffix for 11' of wire or "W30" suffix for 30" of wire. Always use an overhead exhaust system and proper adapter with your ACT hose to ensure the longest possible hose life and best ventilation. Hoses will withstand exhaust temps up to 600°F when used with a proper adapter and a fan assisted system.