1. Large selection of sizes: The screwdriver bit set contains 24 different sizes of bits, including PH1 PH2 PH3, PZ1 PZ2 PZ3, SL 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, T10 T15 T20 T25 T27 T30, and hex 2 mm, 2.5 mm, 3 mm, 4 mm, 5 mm, 6 mm. This makes it a versatile set suitable for various applications. 2. Magnetic bit holder: The screwdriver bit set includes a magnetic bit holder that securely keeps the bits in place, making it easy to switch between different bits. 3. 100 mm extended length: The screwdriver bit set features 100 mm long bits, ideal for tight spaces and hardtoreach areas. This makes it a kit for DIY enthusiasts, mechanics, and professionals. 4. Chrome vanadium steel material: The screwdriver bit set is crafted from durable chrome vanadium steel, ensuring longlasting performance even under regular use. 5. Portable: The screwdriver bit set comes in a compact and portable bag, making it easy to carry on the go. It's suitable for those who work in different locations or prefer to keep their tools organized.