This is a Brooks Instruments Thermal Mass Flow Control MFC SH44 GF125CO916333 GF Series product. It is designed to precisely control the flow of gas media, specifically N2 [Nitrogen], with a maximum flow rate of 100 SCCM. This product is ideal for use in hydraulics, pneumatics, pumps, and plumbing applications. The Brooks Instruments brand is known for their high-quality and reliable flow control products, making this a great addition to any business or industrial setting.