Durable, tight woven, 100% Fiberglass- easy to install white thermo heat wrap. Rated to 1022 degrees Fahrenheit. One roll will wrap one medium header. We hand picked this material for it's heat charateristics and most importantly the flexibility of this material makes wrapping headers much easier. 2in Wide x 1/16in thick 50 Feet long Each roll comes with 5 FREE, 14in long stainless steel zip ties!This item is non application specific. Please verify compatibility before purchase. May require some modification for proper installation.