"The impact socket spanner adapter set from Einhell includes one adapter each with 1/4"" and 3/8"" square drive with a length of 65 mm and one with 1/2"" square drive and a length of 72 mm. Made from manganese-phosphated chrome vanadium, they are optimised for use in impact screwdrivers thanks to their durability. Thanks to the integrated torsion zone, the adapters effectively absorb the forces acting on them to absorb torque loads during the screwdriving process. The socket spanner adapter with 1/4"" E 6.3 shank fits standard drills, impact screwdrivers and cordless screwdrivers. The combination of durability, maximum precision and efficiency makes them suitable for demanding tasks."