TEKTON 1/4 Inch Drive x 5/16 Inch 6-Point Impact Socket | SID02008

Two Size Markings - The size is marked in two ways, both as a high-visibility laser marking and a permanent stamped marking Full-Length Socket Well - The interior well extends fully into the socket, which allows for better fastener engagement in more situations Works With Friction Ring or Detent Pin Anvils - Smooth walls inside the drive end and a detent pin hole make the sockets compatible with both drive tool anvil types Prevents Fastener Round-Off - Radiused corners prevent fastener round-off by applying force to a fastener's flat sides, rather than its corners High-Performing Steel Alloys - This socket is made from 6140 Chromium-Vanadium (Cr-V) and has a corrosion-resistant manganese phosphate coating