new design ,replaces the entire socket set . steel construction. say it fits 6 point , 12 point, spline ,torx, square , damaged bolts , standard and metric from 5/16 (8 mm) to 3/4 (19 mm) all in one unite
These things are like those spark plugs with multiple side electrodes. Every so many years another company comes up with another version.not a new design. I have one of these my Grandfather gave me about 1966. it was not new then so I think it may have been made in the early 60's.
OH, no rubber handle and not metric, so maybe this qualifies as a new design.
PT in Tennessee