COX 41004XT Chilton 10.3 ounce cartridge extra thrust caulk gun is designed to outlast those caulk dispensers that are found at the hardware and big box home improvement stores. This caulk gun's body is constructed of a heavy duty die-cast zinc alloy to withstand years of use. The caulk flow is 18:1 which will keep up with your fast pace! This caulking tool comes with a wear compensating device, a barrel that rotates so you can approach those hard to reach areas, a built in ladder hook for both convenience and safety and also a sintered steel catch plate. Although the COX model 41004XT caulk gun is economical in price, it is definitely well constructed and has received many positive reviews for its stamina and workability. It works quite well with low - medium viscosity silicone sealants, polyurethane sealants and adhesives.