The Milwaukee Caulk Gun Nozzle Sausage Pack is a set of 12 replacement nozzles for caulk guns. The nozzles are made of high impact polystyrene plastic and have a 1/4" diameter opening. They are compatible with most caulk guns that accept standard 1/4" nozzles. The nozzles have an angled tip design to allow for precise caulk bead application. This 12 pack provides replacements when nozzles get clogged or worn out. With the angled tip design, these nozzles from Milwaukee help provide more control and precision when applying caulk.