Engineered ergonomic construction. Rotating barrel. Rugged composite construction. Reinforced cage for extra strength. Sharp precision cutter. Extra long clean out. Drip/No Drip feature for bead control. Recommended for use with all caulks, construction adhesives including polyurethanes, concrete masonary and roofing sealants. ETS3000 & ETS5000- 18:1 ratio.