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 contains 250pcs screws, including M2, M2.5, M3, M4, M5, M6, M8, M10 different specifications, convenient to meet different situations Specification: Bolt Type:Hexagon Socket(Hex wrench is required to act on the bolt) Material: stainless steel Quantity: 250 Weight: Approx.516g/18.2oz Package list: 3 x 20PCS M2 6 x 20PCS M2 4 x 20PCS M2.5 8 x 20PCS M2.5 6 x 20PCS M3 12 x 20PCS M3 8 x 20PCS M4 12 x 20PCS M4 10 x 20PCS M5 16 x 20PCS M5 12 x 15PCS M6 16 x 15PCS M6 12 x 8PCS M8 16 x 8PCS M8 16 x 4PCS M10 1 PCS Box Package List 1These screws are suitable for computer hard disk, keyboard, memory, motherboard, case etc. 2The screws set is made of high quality stainless steel material, high hardness, corrosion resistance, durable in use 3These fasteners feature good fixation, easy to use, practical helper in your Diy assembly process 4Wide application, in addition of electronic products, there are also electric, electric, chemical, water conservancy, mechanical equipment, furniture and so on 5This package contains 250pcs screws, including M2, M2.5, M3, M4, M5, M6, M8, M10 different specifications, convenient to meet different situations