Brand: Beta Tools
The 1266BP Series hex drivers from Beta Tools feature the comfortable molded "BetaGRIP" screwdriver-type handle for delivering maximum torque. The ball end lets you use the driver at an angle (up to 30° to the fastener) for access in tight spots.
This size fits metric fasteners with a 4mm hex recess. Measures 233mm long (L) with a 125mm long shank (L1). The shank diameter is 5mm. Weighs 73.3 g.