1/4 Inch Drive x 9 mm Deep 6-Point Impact Socket Contiguous 48 US States We measure our hex key

We measure our hex key tolerances in two ways

Drill Size: 37/64"

Length Under Head: 1-1/4"

and the soft

Wrench Size: 1-1/4"

1/4 Inch Drive x 9 mm Deep 6-Point Impact Socket Contiguous 48 US States We measure our hex keyTwo 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