138 in 1 Screwdriver Set Repair Tool Kits With Mobile Phone Case DIY Laptop Yellow Description: 138 in 1 screwdriver set: various precision drill bits, complete models, equipment with internal hexagon and cross, meet daily maintenance needs. Reliable quality: made of high quality chrome vanadium alloy steel, anodized surface, smooth edges for a comfortable grip. Magnetic Bit Holder: The screwdriver set drill bit is magnetic. All size bits undergo rigorous quality control tests to ensure stability and prevent them from getting lost or dropped. Flexible shaft extension: Freely adjustable interface extension rod for easy maintenance. sophisticated bits, good strength, wear resistance, each bit engraved with model number for easy access. Wide Application: The precision electronic screwdriver set is designed to repair mobile phones, PCs, laptops, computers, game consoles, watches, glasses, cameras and other electronic devices. Specifications: Material: chrome vanadium alloy steel, plastic Size Chart: about. 17x11x5,7 cm or 6,69x4,33x2,24 inch The package includes: Screwdriver set 138 pieces