Socket Spanner Insert for Impact Wrench DIN 3129 for hexagonal screws, wrench width: 1.06 inch (27 mm) Length: 1.97 inch (50 mm), outer diameter: 1.73 (44 mm) for inch thread, 18 M Outer Diameter: 1.67 inch (42,5 mm), drive: inner square DIN 3121 / 3/4–inch