Both the resin and hardener are in the same tube! Six10 Thickened Epoxy Adhesive combines the strength and reliability of a two-part West SystemA(R) Brand Epoxy with point-and-shoot convenience. The self-metering coaxial cartridge dispenses a gap-filling structural epoxy.The tube comes with a static mixing tip that lets you lay down a bead of thickened epoxy with any standard caulking gun. It can be easily tooled into a non-sagging fillet or used to wet-out light to moderate reinforcing fabrics like fiberglass. The hardener provides a long open time but has fast thru-cure. Six10 stays workable in the static mixer for about 40 minutes at 72AdegF, making it practical for long or complicated assemblies.a Dispensed with standard caulking guna Bonds tenaciously to wood,metals, fiberglass and concretea Cures in temperatures as low as 50AdegFa Working time: 42 minutes at 72AdegFa Cures to solid in 5-6 hours and will take high loads in 24 hours