Power Control Units features: Are you looking for a professional, yet affordable keystone jack connector? Are you in search of a sturdy, trustworthy tool that can do multiple jobs at once? If yes, look no further Our keystone jack connector must meet your needs. It is one of the best choices for you. Features-Color:Silver-Material:PC, gold platedphosphor bronze-Size:4.00X2.00X1.50cm/1.57X0.79X0.59in PC has great and stable electrical insulating property in wide range of temperature and humidity Phosphor bronze is not easy to heat up, strong anti-wear and good flexibility while ensuring good get touch ing The durable housings of these modular plugs, allow for visual verification of wiring configurations Easy opening and fast wiring, ensure core can get all the way into the base It is manufactured with professional technology to ensure the high-quality of the product and can work for a long time.