Global King Hardware Screw Driver Interchangeable Magnetic 58 in 1 Screwdriver Set Repair Tools 58-in-1 interchangeable precise manual tool set. High hardness and good toughness. Professional portable hardware tools with perfect weight & compact design for easy carry. Non-slip tough shaft ensures greater comfort and convenience. Available for repairing laptops, mobile devices, and other precision items like wristwatches. Bits material: Chrome Vanadium with strong magnetic