[Widely used]: 15 most commonly used sizes, suitable for all general- notebook computers. Such as B. LG and so on.[BOX SIZE]: about 178 x 105 x 23 mm, it is convenient to arrange the screws, it looks and orderly.[Screw material]: Alloy steel, laptop screw set has anti-rust performance, can long-term use.[Computer repair]: A different screws used for laptop repair, it is convenient to repair the laptop.Category: Combination screwsHead type: round headGroove type:Function mode: hand screw/screwdriverThread specifications: M2 x 3 (small), M2 x 3 (), M2 x 4, M2 x 6, M2 x 8, M2 x 10, M2.5 x 3, M2.5 x 4, M2, 5 x 5 , M2.5 x 6, M2.5 x 8, M2.5 x 10, M2.5 x 12, x 3, x 4 (30 pieces of each size)Thread tolerance: standardSurface treatment: black oxideMaterial:alloy steelcolour:blackPackage Contents:30 x M2x3 Screws(small)30 x M2x3 Screws()30 x M2x4 Screws30 x M2x6 Screws30 x M2x8 Screws30 x M2x10 Screws30 x M2.5x3 Screws30 x M2.5x4 Screws30 x M2.5x5 Screws30 x M2.5x6 Screws30 x M2.5x8 Screws30 x M2.5x10 Screws30 x M2.5x12 Screws30 * M3x3 Screws(Head size 7mm)30 x M3x4 ScrewsOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.