This computer screw set is made of , which can withstand use. Features the stainless steel material, which has high durability, not easy to deform. Fine workmanship, ensures practicality. Features -Color:Multi -Material:Stainless steel -Size:12.50X6.50X2.50cm/4.91X2.55X0.98in - Widely used in door, window, computer repair and assemble, car manufacturing, appliance manufacturing, and etc. - Compatible with all general purpose laptops, don't worry about laptop case screws coming loose again. - Large quantity to meet daily needs, can be used to repair and fix your laptop. - If you're a typical home computer user, it will probably be the only set of screws you will need. - Every detail is carefully crafted, experience the high durability and practicality. Package list: 48 x M3x8 paper washers 30 x Cross Countersunk Head Bolts 30 x Cross Countersunk Head Bolts x .5x6 Iron nickel plated flange screws x Single head hexagonal copper 43 x Cross disk / round head screws bolts 43 x PWM3x4 Cross screws bolts 46 x PWM3x5 Cross screws bolts 6 x .5x5 nickel plated Thumb screws 6 x .5x5 Hand screws