Use with a caulking gun. Remove the nut and nose plug from the top of the cartridge. Insert the cartridge into a caulk gun. Attach the provided static mixing tip to the cartridge and twist on until it is tight. Apply the adhesive using an epoxy spreader to manipulate it. For best results, it should be spread to a thickness of 1/8” to 1/16” that covers all of the shiny, sanded metal. When finished, leave the mixing tip on the cartridge. Replace mixing tip upon next use.