The D38999/26GG39AD is a connector manufactured by TE Connectivity. It is a cylindrical, quick-disconnect connector with a lighter weight, thermoplastic resin shell. This connector is designed for a variety of applications and can hold up to 27 signal and power contacts. It is a perfect choice for harsh environmental conditions due to its corrosion-resistant and high temperature-resistant construction. This connector has built-in front-mounted strain reliefs and ground clips and is also compatible with signal and power contacts from Series 3, Series 8, Series 8S, Series 8X, Series 21, Series 24, and Series 25.