Wera Series 1 800/1 BDC Diamond coated Bit, Slotted 1.2mm Head x 1/4" Drive
Wera Bits are designed for the most demanding applications in trade and industry.  They are designed to have the ability to transfer high torque loads, safe to use and extremely durable. The BiTorsion tools have special tempered torsion zones that absorb peak loads when being used with power tools; preventing premature breakages, extending the service life of the tool.