Quick Release Bit Holder: The set includes a quick release bit holder for fast, tool bit changes, increasing efficiency during work. 33Piece Magnetic Extension Bit Holder Screwdriver Bits: This set contains 33 screwdriver bits with a magnetic extension. Each bit is about 25 mm long with a bottom diameter of approximately 35 mm. Durable Chrome Vanadium Steel: Made of quality chrome vanadium steel, these bits are durable and practical for a wide range of applications. Versatile Bit Types and Sizes: The collection offers hollow and solid bits, with sizes including 3Claws, 4Claws, 1Word Open, Plum Holes (T10T, and Hexagonal Punches (2 mm to 5/32 inch). Practical Performance: The combination of quick release, magnetic extension, and robust steel construction supports reliable performance across tasks. Realworld Use Scenarios: Electronics assembly and where quick bit changes improve workflow. Furniture assembly or woodworking projects that require a variety of bit types and sizes. General household maintenance and appliance , offering versatility for different fasteners.