GASKET MATERIAL KIT.Included in this kit are five pieces of material for custom made gaskets. Each piece measures approximately 8" x 8".Kit contains the following:One Metal reinforced heat gasket material, app. .040" .One Heat resistant compressed nitril cellulose, app. .015".One Steel reinforced exhaust material, app. .045" -.050" .One Cork and rubber nitril based material, app. 1/16".One Treated paper gasoline and oil resistant, app. 1/32".