✔️ 520-PIECE COMPREHENSIVE KIT - Never buy screws repeatedly! This massive PC screw set covers ALL critical sizes for PC/laptop repair & DIY projects - motherboard mounts, SSD/HDD installation, fan retention, standoffs, and insulation gaskets. Perfect for technicians and hobbyists.✔️ PRECISION-ENGINEERED FOR HARDWARE - Professionally curated for electronics: computer screws assortment is M3×5mm & M3×3mm SSD Screws (120pcs), M3×5mm Motherboard Screws (60pcs), #6-32×5mm HDD Screws (60pcs), M5×10mm Fan Screws (40pcs), M3×6mm Standoffs (40pcs), #6-32×6mm Chassis Screws (50pcs), 90x M3 Insulating Washers. Eliminate compatibility guesswork!✔️ BLACK ZINC-PLATED CORROSION DEFENSE - Motherboard mounting screws are high-tensile carbon steel core with electroplated black zinc coating, providing triple protection: Superior rust/corrosion resistance, ESD-safe for sensitive components, and a Sleek black finish for professional builds✔️ INCLUDES PHILLIPS SCREWDRIVER - Get started immediately! Kit comes with a ergonomic Phillips-head screwdriver (CR-V steel) – no extra tools needed. Ideal for quick upgrades and on-site repairs.✔️ ULTIMATE UPGRADE SOLUTION - Master every project: PC assembly, laptop SSD/HDD upgrades, fan replacements, and hardware maintenance. Factory-sorted compartments ensure instant part identification. Your all-in-one screw organization system!