Caulking Gun Ultra-Press For 310 ml + 150 ml standard cartridges. Changeable Transmission ratio » 12:1 for low viscous products » 18:1 for high viscous products. Switch for self relaxing function, push rod: hardened & carbon-coated, incl. ladder hooks, punched, automatic-release end stop. Robust & powerful, ergonomic design, stress-free work, effective power transmission, rotatable cartridge fram.robust & powerful, ergonomic design, stress-free work, effective power transmission, rotatable cartridge frame, hardened & chrome-plated push rod, ladder hook with butterfly grip, additional plastic cartridge fixing, rubber grip. Article Nr. 906 3310 Content 1 St.