Made of carbon steel, this laptop screw set is convenient for repairing laptops. Includes 15 different sizes, 30 pieces each, totaling 450 screws. Models: M2 * 3mm (30pcs); M2 * 4mm (30pcs); M2 * 5mm (30pcs); M2 * 6mm (30pcs); M2 * 8mm (30pcs); M2.5 * 3mm (30pcs); M2.5 * 4mm (30pcs); M2.5 * 5mm (30pcs); M2.5 * 6mm (30pcs); M2.5 * 8mm (30pcs); M3 * 4mm (30pcs); M3 * 5mm (30pcs); M3 * 6mm (30pcs); M3 * 8mm (30pcs); M3 * 10mm (30pcs). Packed in a plastic box, suitable for universal laptop compatibility, such as LG and other brands. Item: Laptop Screw Set Material: Carbon Steel Sizes: M2, M2.5, M3 Quantity: 450pcs Color: Black Package Contents: 450 x Laptop Screws Note: The package includes only the items listed above. Other accessories are not included. Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement error allowed is +/- 1-3cm.