Works great just changed jobs so I dont need to apply RTV like I use too. The SNAP-ON CTCG8850 18V Caulking Gun is a high-quality power tool designed for automotive use. Made by the trusted brand Snap-on, this tool operates on an 18V battery and is manufactured in the United States. While it does not come with a warranty, this caulk gun is reliable and durable, perfect for professionals and DIY enthusiasts alike. Its compact size and ergonomic design make it easy to use for a variety of caulking projects.