Up to 15x more robust than a Bosch 2608522316 standard holder - Do you need a reliable bit holder to screw in screws more efficiently? The robust PRO Impact is equipped with a permanent magnet and a quick release so you can do your tasks effortlessly. The PRO Impact is a good choice for installers who need a robust and durable solution that makes it easier for them to perform more demanding screwdriving jobs. The permanent magnet holds the bits securely in place, while the quick release fixes them and ensures an even stronger hold. Impact resistant 1/4 inch hex shank for use with impact drivers and drill drivers