J-B Weld (2) 5 Oz. KwikWeld Professional EpoxyJ 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 six minutes and is fully cured in four to six hours. J B KwikWeld cures to a dark grey color, is rated at a tensile strength