Newborn super smooth rod revolving frame caulk gun. 1/10 gallons cartridge. Includes seal puncture tool and built-in spout cutter. Features zinc alloy handle and trigger, precision sintered friction plate, easy release star-burst reverse-punched gripping plate. It has a 18:1 thrust ratio. The Newborn Brothers 1/10-gallon super smooth rod caulk gun is a professional-grade high-thrust model for use with any sealant or adhesive. The gun features a revolving barrel, a zinc alloy handle, a ladder hook for added ease of use, a thumb release, an all steel construction for added durability, and a thrust ratio of 18:1 for easy extrusion of heavy viscosity caulk and sealant.