Ko-ken 3400MZ-21 3/8 Sq. Dr. Socket 21mm 6 point Length 23mm Z-series

3/8" square drive Z-Series, Metric, 6-Point Socket in 21mm. The Sockets within the Z-Series line are thin-wall and shorter in height than standard sockets. This development took place to ensure that our sockets could fit into any situation they need to. Note that the compact design does not sacrifice quality nor strength of the sockets.