12:1 manual drive 20 oz sausage adhesive caulking gun, with 2" diameter aluminum barrel. Thrust: 375 lbf, Pressure: 120 psi Designed for standard viscosity materials. Features include full size handle for comfortable and efficient dispensing, double gripping plate technology for no slipping and long life, convenient rotating swivel barrel, and durable sausage pistons prevent bag-wrap. Dispenses 10oz, 13oz or 20oz sausage packs. Can be converted to dispense bulk or 10oz / 12oz cartridges with parts included. Legendary Albion design and quality make this tool a leader in value.