A toughened, versatile, liquid epoxy for permanent waterproof bonding of fiberglass,ceramics, metals, plastics, damp & difficult-to-bond woods. With a modulus of elasticity of 150,000 PSI, it is a bit more flexible than standard epoxies & polyester, but much stiffer than adhesive sealants. It can be modified with West System fillers & additives, & used to wet-out fiberglass tapes and fabrics. Mixed at a 1:1 ratio, G/flex gives you 45 minutes of working time at room temperature. It reaches an initial cure in 7 to 10 hrs & full cure in 24 hrs. Contains 4 fl. oz. G/flex 650 resin, 4 fl. oz. G/flex 650 hardener (8 fl. oz. mixed epoxy), 2 reusable mixing stick/applicators, 2 12-cc syringes,4 grams Adhesive Filler, 4 mixing cups, 1 pr disposable neoprene gloves, 4 alcohol cleaning pads & complete handling 7 repair instructions.