Coupler based on DIN 3120 - A 12.5,ISO 1174,with ball lock. Square drive as per DIN 3120 - C 12.5, ISO 1174, with ball retention groove .2C reversible ratchet 1/2inch: lever for reversing clockwise/anticlockwise direction, push-button release, fine-toothed, oval head, dual-material handle for ease in handling, for sockets .Socket 1/2", bi-hex: metric, short, as per DIN 3124, ISO 2725 .Socket extension 1/2inch .Convertor/slider 3/8" x 1/2": for driving sockets and screwdriver bit sockets .Chrome-vanadium steel, matt satin chrome-plated .For hand-operated screw work .Plastic case in GEDORE red Design .Clamp-secured tools .Metal hinges/fastener