Steel cradle frame (also called half-barrel) caulking gun for 1-quart cartridges (cartridges not included). For use with latex, vinyl, acrylic, siliconized acrylic, and silicone. Ratchet-style pressure rod has teeth to hold the rod in place after each pull of the trigger for minimizing drips. Hook on the back for hanging it on a ladder. Seal puncture tool and spout cutter built into side for opening cartridges without a knife.