Weld-On® 845™ manual dispensing gun comes in three options. Part # 14151 is for use with 400 mL cartridges and is a plastic frame. Part # 14152 is for use with 400 mL cartridges and is a metal frame. Part # 12471 is for use with 43 mL cartridges and is a plastic frame. For use with 845™ two-component, high strength, highly viscous, low VOC reactive adhesive.