J-B Weld Kwik Weld 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 Kwik Weld has a 1:1 mixing ratio sets in 6 minutes and is fully cured in 4-6 hours. J-B Kwik Weld cures to a dark grey color is rated at a tensile strength of 3127 PSI and will withstand temperatures up to 250°F.