GearWrench 80398S 3/8-Inch Drive 6-Point Mid Length Metric Socket 16mm Access with these sockets are intended for use Strength with Surface Drive contact points virtually eliminate the rounding of fasteners Angled entry guides the socket on to the fastener Double line (SAE) & knurled line (mm) to easily identify standard versus metric sockets Large hard-stamped size on both sides for fast, easy identification