Robust and Durable Material: Tiny screws are made of high-quality carbon steel with exquisite workmanship, scratch resistance, corrosion resistance, not easy to rust, strong, not easy to break or damage and have a long service life and stability. | Phillips Round Head Screws Set: The micro screws feature a cross round head flat head design with clear, smooth threads, without burrs, uniform force, without slipping during use, which saves time and improves work efficiency. Tips: This product is a miniature screw, measured in millimeters, please confirm the size before purchasing. | Multi-scene Application: Widely used to repair watches, glasses, sunglasses, mobile phones, electronics, computers, small mechanical items, etc. Ideal for home, office, warehouse, etc. | Easy to Store: All tiny screws for electronics are stored in a transparent and sturdy storage box with compartments. Small metric machine screw assortment are stored separately, well organised, easy to carry and find. During transport, there is no confusion and the use is convenient. | Package Includes: 1000 pieces in total, 20 sizes, 50 pieces each: m1.6 x 5 mm, m1.6 x 8 mm, m1.6 x 12 mm, m1.6 x 14 mm, m1.7 x 5 mm, m1.7 x 8 mm, m1.7 x 12 mm, m1.7 x 14 mm, m2 x 5 mm, m2x8mm, m2x12mm, m2x14mm, m2.5x5mm, m2.5x8mm, m2.5x12mm, m2.5x14mm, m3x5mm, m3x8mm, m3x12mm, m3x14mm, meet the requirements of multiple scenarios and areas.