Features 【Good Material】: Using high quality carbon steel material with fine thread, ensuring no deformation or slipping in long use. 【Has 2pcs Tool】: A screwdriver and a brush are also included in the set, largely simplifying operation and improving efficiency. 【Easy Carrying】: Designed to have a light weight and a compact size as well, both the storage and carrying are very simple. 【Practical Use】: Suits perfectly for the maintenance of PC cases, power supplies, motherboards, hard drives and laptops, etc. 【600Pcs in All】: Comes with 12 kinds of screws, and each type has 50pcs. The large quantity will meet your varied work needs. Specification: Item Type: Computer Screw Material: Carbon Steel Colour: Black Wide Application: Suitable for DIY by professionals, hobbyists, maintenance personnel, etc. Ideal for PC cases, power supplies, motherboards, hard drives and laptops.  Package List: 50 x M3 x 5 Screw 50 x M3 x 8 Screw 50 x M2 x 10 Screw 50 x M2.5 x 4 Screw 50 x M2.5 x 5 Screw 50 x M2.5 x 6 Screw 50 x M2.5 x 8 Screw 50 x M2 x 3 Screw 50 x M2 x 4 Screw 50 x M2 x 5 Screw 50 x M2 x 6 Screw 50 x M2 x 8 Screw 1 x Brush 1 x Screwdriver Package List 50 x M3 x 5 Screw 50 x M3 x 8 Screw 50 x M2 x 10 Screw 50 x M2.5 x 4 Screw 50 x M2.5 x 5 Screw 50 x M2.5 x 6 Screw 50 x M2.5 x 8 Screw 50 x M2 x 3 Screw 50 x M2 x 4 Screw 50 x M2 x 5 Screw 50 x M2 x 6 Screw 50 x M2 x 8 Screw 1 x Brush 1 x Screwdriver