SPGJ 12-10 is a type of stainless steel plug-in reducer pneumatic fittings with 10mm diameter hose connection and 12mm diameter stem. Its stem can be used as a pipe to be pushed into another push-in fittings. All bodies are made of stainless steel 316, which is highly resistant to corrosion, great for use in corrosive environment such as water treatment plants or other industries such as food & beverage.