The 0253–10 part is a T-connector, used in electrical and plumbing systems, manufactured by the Elektro-Plast Nasielsk company. This connector is made from brass, using the highest quality materials, and features a unique design to help prevent crosstalk, as well as providing improved resistivity to heat, as well as corrosion, and vibration. The connector is also UL and CSA listed, as well as being CE, RoHS, and CB certified, meaning it is safe to use in almost any application.