The Dart Professional Magnetic Impact Rated Screwdriver Bit Holder (DIMBH-1) securely retains screwdriver bits with a locking mechanism for accurate screwdriving. Its quick-release mechanism allows for fast and convenient bit changes. Manufactured from specially formulated V8 steel alloy for extreme toughness, it features a super strong magnet that easily holds screws and fixings to a screwdriver tip. The drive is 1/4"" hexagon, suitable for power-driven screwdrivers and drills. The total length of the bit holder is 60mm with a 1/4"" (6.3mm) Hex shaft drive. This accessory is designed to hold screwdriver bits magnetically, attaching to drills or screwdrivers to securely hold bits in place, making it easier to insert and remove screws. It is constructed from durable materials to withstand challenging working conditions and heavy use, making it ideal for difficult screwing tasks. The quick-release mechanism allows for rapid attachment and detachment from the power tool. It is designed to work seamlessly with all 1/4 hexagon insert bits.