The Wera 05380126001 842/4 1/4'' Drive Hexagon Ball Socket Bit is a tough viscous Wera bit for hexagon socket screws and universal use. The ballpoint drive profile means that it is possible to swivel the tool axis away from the screwdriving axis, thus enabling "round the corner" screwdriving. 1/4'' hexagon, suitable for holders as per DIN ISO 1173-F 6.3.