The Newborn red plastic cone acts as a nozzle to help dispense caulk from a caulking gun and is used with Newborn bulk model caulking guns (sold separately). The cone measures 4-3/4" long and 2" in diameter. Newborn Brothers manufactures dispensers and accessories for use with sealants and adhesives. The company, founded in 1974, is headquartered in Jessup, MD.