Features: These screws are suitable for computer hard disk, keyboard, memory, motherboard, case etc. The screws set is made of high quality stainless steel material, high hardness, corrosion resistance, durable in use These fasteners feature good fixation, easy to use, practical helper in your Diy assembly process Wide application, in addition of electronic products, there are also electric, electric, chemical, water conservancy, mechanical equipment, furniture and so on This package is total of 320 pcs screws, and several different specifications are convenient to meet different situations Specification: Material: stainless steel Size: M2*3, M2*412, M2*5, M2*6, M2*8, M2*12, M2*16, M2*20, M2 Nuts Quantity: 320 Weight: Approx. 81g/2.9oz Package list: 20PCS M2*3 20PCS M2*4 20PCS M2*5 20PCS M2*6 20PCS M2*8 20PCS M2*12 20PCS M2*16 20PCS M2*20 160PCS M2 Nuts 1 PCS Box