This precision screwdriver set is designed for electronics repair, featuring 40 high-quality CR-V steel magnetic bits (heat-treated to 60HRC for exceptional durability, wear resistance, and deformation/breakage resistance) that cover nut sockets, tamper-proof Torx, standard Torx, Gamebit, Tri-wing, and other specifications. Compatible with computers, laptops, smartphones, game consoles, and more, it effortlessly handles assembly, part replacement, hardware upgrades, and common issues like power abnormalities, motherboard failures, poor heat dissipation, hard drive expansion, insufficient memory, and fan noise. Boasting an ergonomic pen-shaped design for 360° one-handed operation in tight spaces, it has a built-in magnetic switch to adjust magnetism (preventing screws from falling or protecting sensitive components) and comes with practical accessories including a magnetic mat, extension rod, flexible shaft, pry bars, tweezers, and a suction cup. Packaged in a high-quality PU canvas portable case with a nylon shoulder strap, it's organized, compact, and ideal for home or on-the-go use—perfect for gamers, DIY enthusiasts, technicians, and makes a thoughtful gift.