J-B kwikweld is a fast setting version of the original J-B weld two-part epoxy cold weld system that provides strong, lasting repairs to metal and multiple other surface types. After mixing, it forms a permanent bond and can be shaped, tapped, filed, sanded and drilled after curing. J-B kwikweld has a 1:1 mixing ratio, sets in 6 minutes and is fully cured in 4-6 hours. J-B kwikweld cures to a dark grey color, is rated at a tensile strength of 2424 PSI and will withstand temperatures up to 300 degree Fahrenheit.