Description: There are many types of screws in the kit, which can meet your different needs. The screw kit contains many of the most popular fasteners, which is very suitable for building, repairing and maintaining computer systems and is very convenient to use. The screw kit is made of high quality carbon steel material , which is durable and anti-rust. This screw kit has 228 screws. It is suitable for fixed installation of motherboard, chassis, power supply, hard disk, fan, floppy disk/CD-ROM/DVD-ROM drive. Item Name: Screw Set Material:Carbon Steel Size:13cmx6.5cmx2.2cm/5.12inx2.56inx0.87in Notes: The quantity is about 228pcs, due to manual calculation, the quantity might has 1-5pcs more or less, hope you can understand, thank you. Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 6 X M3.5x5 Thumb Screw Black 6 X M3.5x5 Thumb Screw Nickel Plated 30 X PWM3x5 Phillips Screw Bolt 30 X PWM3x4 Phillips Screw Bolt 30 X M3.5x5 Cross Plate/Round Head Screw Bolt 24 X M3x6+6 Single Head Hexagonal Copper Pillar 24 X M3.5x6 Iron Nickel Plated Flange Screws 24 X KB5x10 Nickel-plated Cross Countersunk Head Bolts 24 X KB5x10 Black Cross Countersunk Head Bolts 30 X M3x8x1 Red Paper Washer