1. 40PCS S2 magnetic chrome-molybdenum alloy bits with a 6.35 mm (1/4) diameter. Suitable for home improvement tasks rather than fine-tuning tasks requiring 4 mm bits. Heat treated for hardness without brittleness and excellent toughness. Includes 32PCS 25 mm short bits in PH (4), SL (4), Torx (10), Hex (9), PZ (3), and U-shaped (2), plus 8 long bits of 45 mm. This set meets professional needs for home life, work, DIY and repairs in any scenario. 2. Aluminum alloy handle. Detachable for use in tight spaces. Ultra-hard thermally forged aluminum alloy with precision CNC molding provides durability and oxidation resistance. Hardness comparable to common steel but about half the weight, offering a comfortable grip for extended use. 3. Effort-saving ratchet design. The handle incorporates a 6.2-degree ratchet mechanism and a 58-tooth reversible ratchet to reduce effort by 80%. Torque up to 50 N m enables easy handling of household appliances or tools for repairs, tightening or loosening screws, saving time and reducing wrist strain. 4. Multi-functional handle. Serves as both screwdriver and small wrench with seamless switching for versatile applications. Efficient for home appliance repairs, power tool work, and automotive maintenance. The built-in magnet securely holds hex bits for convenient single-hand operation. Use scenarios: - Assembling flat-pack furniture or installing hardware. - Repairing household appliances or performing power tool maintenance. - Automotive maintenance and tightening screws in tight spaces.