... , Polyesters. · Epoxy Acrylates, Hybrids, Urethanes. · Polysulfides, foams, Polymers, polyureas How to use caulking gun? Instructions:1, Open the swfit of handle ... and then pull the rack to reach the maximum.2, Put into two-companent impression ... After using, put the rack back to the original location.5, Remove the cartridge, then to repeat the above operation. 600ml epoxy ...