Thermo-Flex Aluminum is a composite heat shield material with unlimited uses. The material is manufactured with a combination of materials to provide abrasion-resistance, thermal insulation, and physical containment of hoses and wiring. The combination of aluminum, silica, and stainless steel is combined to produce a sleeving that is flexible, lightweight, and strong. The aluminum-silica combination can be slit for applications such as wire looms or hose covering without disconnecting the ends of the wire or hoses. Thermo-Flex Aluminum can withstand extreme temperatures of up to 750 Degree F Details: Size 1 1/4 Inch x 3 Foot Color Silver Extreme Temperatures of up to 750 Degree F Material: Aluminum silica Combination Can Be Slit for Wire Looms or Hose covering