• A6800DM 1/4" square drive socket bi-hex profile metric, 6, 7, 8, 9, 10, 11, 12 and 13 mm • Highly polished finish • High-performance alloy steel • Less wear and damage to fastener thanks to Dynamic-Drive™ profile sockets • Knurled shank for finger turning of free running fasteners • Thin walled for better accessibility • Sockets are applicable to nuts and bolts used in the aerospace industry • Socket gives maximum load distribution and torque from the additional flank area • Standards: ISO 1174 and DIN 3120