The Albion DL-59-T23 30oz Special Deluxe Manual Bulk Gun with a Teflon Barrel is a professional grade caulk gun with all the features you need to caulk your log home properly and efficiently. The T23 bulk gun has a capacity of 30 ounces, and comes complete with a half inch nozzle included. Its steel construction and instant pressure release make caulking a breeze, and its inner coated Teflon barrel is made of only the highest quality materials, guaranteeing this product is built to last.