Robust Bit-Check provides a quick overview of which tools are available for use. The bits that are not used are simply placed back in the holder and are never lost. Easy to carry, e.g. in a shirt pocket. Extra hard bits. BiTorsion bits with an elastic torsion zone, which transfers kinetic energy during peak loads. With a softer bi-torsion zone to prevent the bit tip twisting under high loads. This extends the life of the product considerably. The right holder will maximise the life of your bits. Rapidaptor technology makes it possible to insert bits without handling the socket. The bit is removed simply by pushing forwards. This enables lightning quick bit changes, even with one hand. For bits with a 1/4'' hexagonal drive according to DIN ISO 1173-C 6.3 and E 6.3. For mounting in a screwdriver or the chuck of an a electronically controlled drill.