Up to 15 times more robust than a standard Bosch holder. Do you need a reliable bit holder to screw in screws more efficiently? The robust PRO Bit Holder Impact is equipped with a permanent magnet so you can complete your tasks effortlessly. The PRO Bit Holder Impact is a good choice for installers who need a robust and hard-wearing solution that makes it easier for them to carry out more demanding screwdriving applications. The permanent magnet also ensures that the bits stay firmly in place. Thanks to its slim design, the bit holder is easy to handle. Impact-resistant 1/4 inch hexagonal shank for use with impact wrenches and drill drivers.