The Newborn Brothers 1/4 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 T-bar, 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.