Feature: 1. DURABLE CARBON STEEL: Computer notebook screws are made of good quality carbon steel material to ensure long term use 2. EVEN THREAD WITHOUT SLIDE: Come with tight and even threads, not easy to deform and slide during rolling and installation 3. LOW AVERAGE ERROR: M2, M2.5, M3 flat head screws are complies with standard metric. The average error is less than 0.01mm. The kit is available in many different sizes to meet your greatest needs 4. FOR PROFESSIONALS AND HOBBYISTS: Screws assortment kit is versatile and suitable for DIY by professionals, hobbyists, repairers, etc. 5. FOR COMPUTER PARTS: Screws assortment set is ideal for PC cases, power supplies, motherboards, hard drives and laptops Specification: Item Type: Computer Screws Assortment Kit Material: Carbon steel Color: Silver Wide range of uses, suitable for DIY by professionals, hobbyists, maintenance personnel, etc. Ideal for PC cases, power supplies, motherboards, hard drives and laptops. Package List: 50 x M3x5 Screw50 x M3x8 Screw50 x M2x10 Screw50 x M2.5x4 Screw50 x M2.5x5 Screw50 x M2.5x6 Screw50 x M2.5x8 Screw50 x M2x3 Screw50 x M2x4 Screw50 x M2x5 Screw50 x M2x6 Screw50 x M2x8 Screw1 x Brush 1 x Screwdriver