Wera 25mm Hard 'H' Robertson 2 Square Bits supplied in a Bit-Box, with a slide switch allows simple and gradual removal and reinsertion of the bits. The transparent reverse side provides an easy contents check. Designed for universal use in drill/drivers whilst offering an entry level performance. Thanks to a best-possible utilisation of the material properties, optimally designed geometry and hot forging Wera 'Z' bits deliver an extended service life especially if combined with Wera 897/4 torsion bit holders.