This 17mm Impact Socket is designed for Unistrut Channel with a 1/2" drive. Its thin-walled, shaped profile allows it to fit inside the channel and in areas with limited clearance. The socket has an overall length of 72mm, making it suitable for deep applications. It features a 17mm metric socket size and a 1/2" square drive. For added security, especially when working at height, it includes a ring and pin design to secure the socket to the wrench and prevent drops. Made from Chrome Molybdenum Steel with a matt black phosphate finish. Brahma Professional Tools are engineered for resilience and outstanding performance in both professional trades and DIY projects.