COX 51001 Avon 600 single component caulking gun is universally designed to accommodate cartridges, sausages and bulk loading of your preferred caulk. This single component manual caulk gun includes various plungers for both cartridge and sausage applications. The mechanical advantage is 12:1 and includes a switchable caulk flow control. This caulking tool comes with a wear compensating device, an light weight aluminum barrel that rotates so you can approach those hard to reach areas, a plunger extension that will limit caulk waste, an interchangeable pull handle, a quick release end cap, a ladder hook, three yellow cone nozzles and a spanner wrench. Although the COX model 51001 caulk gun is rather economical in price compared to other caulk guns it its category, it is definitely well constructed and will withstand years of use. It works quite well with low - medium viscosity silicone sealants, polyurethane sealants and adhesives.