This product is a countersunk screw set, which is made of carbon steel material, with good texture, safe and practical. Easy to install and use, it can be easily applied to your computer. It is a very practical accessory that will meet your needs well. Features -Color:Black -Material:Carbon steel -Size:13.00X6.50X2.00cm/5.11X2.55X0.79in - Countersunk head design enables driving where it doesn't have sufficient space for wrenches. - Widely used in door, window, computer repair and assemble, car manufacturing, appliance manufacturing, and etc. - If you're a typical home computer user, it will probably be the only set of screws you will need. - Large quantity to meet daily needs, can be used to repair and fix your laptop. - Outstanding workmanship, reasonable design, stable and practical, will bring you a . Package list: M2x4mm screws M2x5mm screws M2x6mm screws M2x8mm screws M3x4mm screws M2.5x4mm screws M2.5x5mm screws M2.5x6mm screws M2.5x8mm screws M3x5mm screws