3/8" Drive Metric Hex Bit - 236/2HX
Product No. 612082$11.99 $9.00
It's a hex bit socket. It has a 3/8" square drive. Those are the basics.
More specifically, the bit itself is made from premium carbon steel, while the socket part is of chrome-vanadium. The entire tool is hardened and tempered and manufactured to DIN 7422 standards.