8790 HMA Zyklop 1/4", socket, 5/16", x 23 mmThe Wera manual and machine socket (ISO 2725 part 3) can be used in manual and machine operations. With ",Take it easy", tool finder with colour coding by size - for quick and easy identification of the required tool. Slip-proof for easy grip even with oily hands. With ball stop groove. For external hexagon screws and bolts. Made of dull-chromed chrome-vanadium.