STMT73331-8B STANLEY 1/2 6 PT DEEP SOCKET 17MMThe STANLEY STMT73331 8B is a 17mm 1 2" drive deep socket designed for manual use. Crafted from high quality chrome vanadium steel, it features a 6 point design and a chrome plated finish for exceptional resistance to rust. The socket incorporates the Maxi Drive? system, which provides a rounded gripping surface to allow for 15% more torque and helps reduce fastener rounding.