Car enthusiasts and mechanics, this silicone coated fiberglass heat shield sleeve is exactly what you need to protect your hoses and wiring from extreme engine heat! With a 5/8 inch (16mm) inner diameter and 5 feet of length, you'll have plenty to wrap around critical components in your engine bay. This stuff can handle continuous temperatures up to 500° Fahrenheit and even intermittent heat up to 1000°F, which means it can protect against virtually anything your engine can throw at it. The rugged silicone coating makes it resistant to chemicals, abrasion, fraying, hydraulic fluids, lubricating oils, and fuels - so it's not just heat protection but overall durability protection too. Perfect for wrapping around fuel lines, brake lines, wiring harnesses, cables, or even welding lines to prevent heat damage, melting wires, or vapor lock issues. The installation is straightforward - just slide it over whatever you need to protect and you're good to go. It also provides excellent burn protection during under-hood repairs and maintenance, which is a nice safety bonus. The black color looks clean and professional in any engine bay, and the flexibility means it can bend around curves and tight spaces without kinking. Whether you're building a performance vehicle, protecting your daily driver, or working on any project where heat is a concern, this heat shield sleeve is an inexpensive insurance policy that can prevent costly damage and repairs down the road. Seriously, for the price, this is some of the best protection you can add to your vehicle's engine compartment.