Features: Reliable and Long lasting Crafted from high quality brass, these knurled nuts are built to last, ensuring reliable performances over time. Versatile Assortment This set includes 330pcs of threaded inserts in various sizes, providing a wide selection for different bore and thread requirements. Suitable for DIY Projects Whether you enjoy DIY projects or need fasteners for your home improvement tasks, these knurled nuts are perfect for reinforcing 3D printed parts or securing plastic materials. Wide Ranges of Applications These knurled nuts can be embedded in various plastics, making them suitable for a ranges of applications in home improvement and hardware projects. Convenient Storage and Easy to Use The threaded inserts come in a labeled box for organized storage and easy access. With their precise threads, they can be easily installed into tapered holes, providing a hassle frees and efficient operation. Specifications: Material: brass Box size: approx 17.6x10.2x2.3cm/7x4x0.9inch Quantity: M2x4x3.5 30PCS M2x6x3.5 30PCS M2x8x3.5 30PCS M2x10x3.5 20PCS M3x4x5 30PCS M3x6x5 30PCS M3x8x5 20PCS M3x10x5 20PCS M4x4x6 30PCS M4x6x6 20PCS M4x8x6 20PCS M4x10x6 15PCS M5x6x7 15PCS M5x8x7 10PCS M5x10x7 10PCS Package Includes: 330pcs Threaded Inserts note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the difference between different monitors, the picture may not reflect the actual color of the item.