Protect your wiring or fluid lines from extreme heat with these Fragola Performance Systems Ultralightweight fire sleeves. These sleeves are constructed from resin-coated fiberglass that is able to withstand heat up to 1,200 degrees. Fragola Performance Systems offers these Ultralightweight fire sleeves in a range of sizes to help you find the right one for the job. Diameter (in):0.375 in.-0.625 in. Maximum Ambient Temperature (F):1,200 degrees F Installation:Slip-on Heat Protection Color:Black Quantity:Sold by the foot. .