The 3M Flexible Package Applicator Gun is used to accurately dispense materials during the repair of interior and exterior seams and joints. It provides steady application of 3M Windshield Urethanes, Urethane and MSP Seam Sealers from 310 mL packages at a 12:1 ratio.Versatile and Valuable ToolUsed in variety of repair applications, our 3M Flexible Package Applicator Gun is an essential tool for any auto body shop. This applicator is used to apply seam sealers to automotive seams and joints, and is made to fit 310 mL packages. It delivers a steady stream of semi-liquid sealer for precise application in tight cracks and seams. Our 3M Flexible Package Applicator Gun is versatile for use with a full range of sealers on a wide variety of automotive materials, including glass, metal, fiberglass and painted surfaces. High Quality ConstructionAt 3M, we design tools to last, and our 3M Flexible Package Applicator Gun is no different. We use only high quality materials, and make each part available for replacement so that your tool lasts as long as you need it. Made with all metal parts, the fully enclosed body can be easily removed and cleaned, and the internal driver rod provides firm, consistent pressure during use.