Wiha Professional Series Sockets are available as 6 point – 1/4″ drive, 12 point – 3/8″ drive, and 12 point – 1/2″ drive configurations and feature roll-stamped die markings for clear identification, a knurled band for extra grip, smooth broached and clear-coated openings for added protection against rust and corrosion, radiused corners for preventing fastener head round-off, and four-side detent grooves with beveled rim for easy and secure drive engagement.