1/4 Inch Drive Shallow and Deep 12-Point Impact Socket Set with Rails and Trays, 58-Piece (5/32 - 11/16 in., 4 - 17 mm) Shopify Collective Size: 5/16"

Size: 5/16"

Part Number: M16C60BFL12PL

and the wrench's serial number

Part Number DWTSMR212-24X1

1/4 Inch Drive Shallow and Deep 12-Point Impact Socket Set with Rails and Trays, 58-Piece (5/32 - 11/16 in., 4 - 17 mm) Shopify Collective Size: 5/16"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