Description: QUALITY: Made of high quality stainless steel, the thread is deep and clear without burr,rust proof, wear resistant and durable.. SIZES:Total 500Pcs 18 different sizes (Each size type is about 27pcs) electronic mini screws, different sizes can meet your different needs.Small screws can help you with all micro repairs FEATURE: Uniform force, easy to lock, not easy to slip, more convenient and quick to use. WIDELY APPLICATIONS: These min screws are widely used for , computers, electronics, electrical appliances, furniture, toys or anything else repair that requires small screws. Storage Case:An organized case means that you can always find the size you need, and quickly find what you need through the size chart attached to the cover. NOTE: Please do not let the children play to prevent inadvertent swallowed. Specification: Material: stainless steel Size Chart: Style A: Round Head:1.2x2 1.2x2.5 1.2x3 1.2x4 1.2x5 1.2x6 1.4x2 1.4x3 1.4x3.5 1.4x4 1.4x5 1.4x6 2x3 2x4 2x5 2x6 2x8 2x10 Style B: Flat Head:1.4x2 1.4x2.5 1.4x3 1.4x3.5 1.4x4 1.4x5 ; countersunk Head: 1.2x2 1.2x3 1.2x3.5 1.2x4 1.2x5 1.2x2.5 2x3 2x4 2x5 2x6 2x8 2x10 Style C:Round Head:1.2x3 1.2x4 1.4x2 1.4x3x1.4x3.5 1.4x4 1.4x5 1.4x6 2x3 2x4 2x5 2x6 2x8 2x10 ; countersunk Head:1.2x3 1.2x3.5 1.2x4 1.2x5 Style D:Round Head:1.2x3 1.2x4 ; Flat Head:1.4x2 1.4x2.5 1.4x3 1.4x3.5 1.4x4 1.4x5 ; countersunk Head:1.2x3 1.2x3.5 1.2x4 1.2x5 2x3 2x4 2x5 2x6 2x8 2x10 Package Includes: 500pcs Mini Screw Nuts Note: Please allow slightly errors due to manual measurement and different monitors.