Specification: Model: MXBN2;  Material: Brass;  Quantity: 330Pcs;     Features: ✔PACKAGE INCLUDE - The whole set contains 330pcs 4 sizes knurled threaded insert nuts, package in durable transparent box with label. It is easy to distinguish the size of the product, you can choose the suitable one to meet all your needs.  ✔EXQUISITE CRAFT - Made of high quality environmentally friendly brass material, high strength and hardness, strong tolerance, the force is evenly tightened, you can use it for along time, and it will not affect the building.  ✔THREAD SIZE - We prepare 4 common sizes for you, includes: M2 M3 M4 M5, easy to install and carry, it is very convenient for you to carry them.  ✔WIDE APPLICATIONS - Widely used in mobile phones, laptops, various plastic casings, communications, micro-motors, computers, electrical appliances, electronics, toys, watches, lighting, locomotives, etc, and it can be mounted into the taper hole by ultrasonic or heat, or molded during injection.     Package Included: 10pcs - M5*10*6.3;  10pcs - M5*8*6.3;  15pcs - M5*6*6.3;  15pcs - M4*10*5.2;  20pcs - M4*8*5.2;  20pcs - M4*6*5.2;   30pcs - M4*4*5.2;  20pcs - M3*10*4.2;   20pcs - M3*8*4.2;    30pcs - M3*6*4.2; 30pcs - M3*4*4.2;  20pcs - M2*10*3.2;  30pcs - M2*8*3.2;  30pcs - M2*6*3.2;   30pcs - M2*4*3.2.