Thanks to insert profile – Direct attachment to the nut/screw connection Sockets without chamfered edge Super short sockets make it possible to work in very tight spaces Through-hole sockets make it possible to work on stud bolts Sockets with outside hexagon size 22 mm for operation with box-end wrench or open-end wrench Why "super flat"? The usable working space in vehicles, machinery, vending machines, etc. is becoming narrower and smaller. The tools used here are often too large and so no longer fit into the working area The VIGOR solution: Super flat sockets Advantages: The socket, half of which is recessed in the ratchet, provides more space in confined working conditions Dispensing with the chamfered edge allows the socket to be placed directly on the hexagon screw head – even with extremely flat screw connections – and offers the user a high transmission of force Direct placement on the screw connection prevents damage when tightening Drive: Square, hollow 12.5 mm (1/2 inch) Output: Outside hexagon profile Wrench size: 9 mm.