Industrial heavy duty ergo composite caulk gun provides superior performance * Engineered ergonomic grip to keep the wrist in a natural and balanced position for comfort * Rugged composite construction weighs up to 40-Percent less than other models * Extra long clean-out rod that snaps in place when not in use; rotating barrel for corners * Recommended for use with all caulks, construction adhesives including polyurethanes; available in 29-ounce cartridge * Ergonomically designed composite construction * Hardened rod and powder metal drive dog * Quart size capacity * 18:1 thrust ratio for medium- to heavy-weight sealants and caulks