J-B Weld 8271 KwikWeld Professional Size Steel Reinforced Epoxy 10oz Twin Pack J-B Weld is The Original Cold Weld two-part epoxy system that provides strong, lasting repairs to metal and multiple surfaces. Mixed at a ratio of 1:1, it forms a permanent bond and can be shaped, tapped, filed, sanded and drilled after curing. At room temperature, J-B Weld sets in 4-6 hours to a dark grey color. A full cure is reached in 15-24 hours. J-B Weld has a tensile strength of 3960 PSI and sets to a hard bond overnight. It can withstand temperatures up to 550ºF when fully cured. Features J-B Weld kwikweld pro size: Professional 5 OZ Tubes of J-B Weld KwikWeld. KwikWeld is a fast setting version of The Original Cold Weld two-part epoxy system that provides strong, lasting repairs to multiple surfaces. Perfect for DIY Cure and set time: After mixing the tubes at a 1: 1 ratio, it takes 6 minutes to set and 4-6 hours to cure. Once cured, KwikWeld can be tapped, filled, sanded, molded and drilled. J-B Weld KwikWeld?s set and cure color is dark grey Versatile and dependable: J-B Weld KwikWeld is steel reinforced, has a tensile strength of 3127 PSI and can withstand temperatures up to 230 degrees Fahrenheit (110 degrees Celsius). When fully cured, KwikWeld is waterproof Surface applications: Metal, Plastic PVC, Wood, Concrete, Ceramic Tile and Fiberglass USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.