S2 STEEL PRECISION BITS: This set include 42 high-quality S2 steel screwdriver bits, nickel-plated for enhanced durability and corrosion resistance. With a hardness of HRC60-62, these bits ensure reliable performance for precise disassembly and assembly of delicate items HEX EXTENSION BAR: This precision screwdriver set features a hex extension rod, designed to extend your reach into narrow spaces. The rod is magnetized internally, securely holding the bits in place.(Note: The extension rod is magnetic, while the bits are not.) UNIQUE CHUCK DESIGN: The chuck design allows for quick bit changes in seconds—simply press the Chuck to release or secure the bit. During use, the chuck securely tightens the bit, preventing it from loosening or falling out COMFORTABLE HANDLE: The aluminum alloy screwdriver handle features a non-slip knurled design, providing a secure grip for improved control and efficiency. The 360° rotating end cap enables precise handling and one-handed continuous operation WIDE APPLICATION: The mini screwdriver set comes in a compact case for easy storage and portability. It's perfect for various household and electronics repairs, including watches, phones, laptops, tablets, cameras, and more. A thoughtful and practical gift for Father's Day, birthdays, Christmas, or any special occasion, Manufacturer: Hang Zhou Great Star Industrial Co.,LTD