Our SHOCKWAVE lineman's hex bit sockets are designed to be the most durable, providing the best access into tight spaces. Their 1 piece design helps these hex bit sockets to better withstand the torque of power tools. A 1-3/4 in hex fastening depth allows these bits to fit the most common connections and hardware that utilities and electricians encounter. The profile is more compact compared to some competitive hex bit sockets and will fit more connections.