Robust bit check from Wera. Bit checks provide a quick overview of the available tools. Unused bits can easily be returned to the assortment and won't get lost. Easy to transport, for example, in a shirt pocket. Extra hard bits. BiTorsion bits with a torsion zone that dissipates kinetic energy during peak loads. This significantly increases product lifespan. With a suitable holder, the best possible durability 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 to hold 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.