Tamper proof hex screwdriver is 6 inches long with blue handle.
Tamper proof hex screwdriver also known as a booth wrench or security wrench. It features a 1 in. diameter screwdriver handle 5/32 in. hex shaft with a hole drilled in the tip for use with security tamper proof screws used for telephone and CATV applications. Hole Depth 0.25 inches. Hole Diameter 0.094 inches.