Features: This set includes screws, nut, washers, providing a wide ranges of option for different projects. Make of nylon, with good insulation, flame retardant, light weight, rustproof, smooth surfaces. These screws, nut, wahsers can be used for a variety of applications, including metalworking, DIY projects, and home improvement. Easy to Use :The Hexagonal socket drive style making it easy to install and remove screws without the need for additional tool. The interior of the storage box is divides into compartments to store these large quantities of items in a neat and organized manner, as well as to provide quick and easy access to the items you need, and store, organise and protect them when not in use. Specifications: Component: Nylon Box Size: about 17.5x9.5x2.2cm/6.89x3.74x0.87inch Package Includes: 380Pcs/set Hexagonal socket caps Head Screw Bolt Nut Washer note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to difference between different monitors, the picture may not reflect the actual color.