Epoxy Gun - Caulking Gun and Cartridge Applicator Epoxy gun - 300 X 300 Dual Cartridge Adhesive Applicator Lightweight & Durable Caulking Guns The Gun is a dual-component or dual cartridge adhesive applicator, can accommodate 22 oz or 16 oz cartridges Adjustable screw Provides Bead Control Used for foundation repair, wall repair, basement repair, pool repair, concrete & crack repair