Robust bit-check from Wera. Bit-checks provide a quick overview of the available tools. Unused bits can easily be returned to the set and won't get lost. Easy to transport, for example in a shirt pocket. Extra-hard bits. BiTorsion bits feature a torsion zone that dissipates kinetic energy during peak loads. This significantly increases product lifespan. With a suitable holder, the best possible longevity is achieved. Equipped with Rapidaptor technology, which allows for bit insertion without activating the sleeve. The bit can be removed by simply pushing it forward - enabling lightning-fast bit changes, even with one hand. Designed for bits with a 1/4" external hex drive according to DIN ISO 1173-C 6.3 and E 6.3. Suitable for use in screw machines or in the chuck of an electric drill.