15 most commonly used sizes, suitable for general laptop repairs and maintenance. Box size: approximately 178 x 105 x 23 mm, designed for organized storage and easy access to screws. Screw material: alloy steel with anti-rust performance for long-term use. Ideal for computer repair tasks, includes various screws commonly used in laptop assembly and disassembly. Category: Combination screws Head type: Round head Groove type: Not specified Function mode: Hand screw or screwdriver compatible Thread 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, M3 x 3, M3 x 4 (30 pieces of each size) Thread tolerance: Standard Surface treatment: Black oxide Material: Alloy steel Color: Black Package Contents: 30 x M2x3 Screws (small) 30 x M2x3 Screws 30 x M2x4 Screws 30 x M2x6 Screws 30 x M2x8 Screws 30 x M2x10 Screws 30 x M2.5x3 Screws 30 x M2.5x4 Screws 30 x M2.5x5 Screws 30 x M2.5x6 Screws 30 x M2.5x8 Screws 30 x M2.5x10 Screws 30 x M2.5x12 Screws 30 x M3x3 Screws (Head size 7mm) 30 x M3x4 Screws The package includes only the items listed above; other accessories are not included. Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement error allowance is +/- 1-3 cm.