J-B Weld Original Cold-Weld Steel Reinforced Epoxy twin pack, a two-part adhesive system featuring a 1 oz steel tube and a 1 oz hardener tube.Product Specs: Features a 5020 PSI strength formula, sets in 4–6 hours, and fully cures in 15–24 hours to a dark grey color.Applications: Designed for household, automotive, plumbing, marine, and craft repairs, bonding to metal, wood, tile, PVC, and more.