Features: Brand new and high quality Keep your fastener secure with our self locking nut set, crafted from quality carbon steel. Our self locking nuts provide excellent performances in various applications and resist corrosion. Suitable for variety of use, our self locking nut set is perfect for professional, hobbyists, and repair enthusiasts. From household repairs to projects, our self locking nuts ensure a strong hold, preventing loosening during vibrations. Stay organizes and efficient with our self locking nut set, featuring a convenient storage box and assortment of nuts for all your fastening need. Specifications: Component: plastic Quantity: 4mm 50pcs, 5mm 30pcs, 6mm 20pcs, 8mm 10pcs, 10mm 20pcs & 12mm 15pcs Package Includes: 145pcs Hex Nuts with Caps note: Please allow 1 to 3cm error due to manual measurement, please make sure you not mind before your bid, Due to the differences between different monitors, the picture may not reflect the actual colorful of the item.