Power/Impact sockets are 6 point or 12 point fractional size opening. They are available in Industrial Black finish. These special-purpose wrenches are designed for use in a wide range of sizes and capacities. All have square drives, and drive size is a measure of capacity. As detachable socket wrenches provide an almost endless combination of handles, attachments, and sockets, it is possible to assemble a proper tool for almost any type of service within the tool’s capacity.