This hex socket cap head screw set is made of high quality metal, good corrosion resistance and never rust. 150pcs screws is enough for using in the home and office appliance, furniture, etc. Features: Made of high quality metal, good corrosion resistance and never rust, durable to use. Equipped with a plastic box, you can classify screws in an organized manner, more convenient to carry and take out. Use this fastener with the hex wrench, hold the mechanical parts firmly in place. Different sizes for general purpose use, meet all your need. Used widely in the home and office appliance, furniture and other machinery industry. Specification: Condition: 100% New Material: Metal Standard type: American standard UNC Weight: 80gDiameter: 2mm (M2) SizeQuantity#2-56 x 1/815pcs#2-56 x 5/3215pcs#2-56 x 3/1615pcs#2-56 x 1/415pcs#2-56 x 5/1615pcs#2-56 x 3/815pcs#2-56 x 1/215pcs#2-56 x 5/815pcs#2-56 x 3/415pcs#2-56 x 115pcs Package Included: 1 x Box of Hex Socket Screws(included 150pcs) Note: Due to different producing batches, product details might be a little different. If you minding the difference, please buy it carefully. Please allow 1-3mm differs due to manual measurement. Due to the different display and different light, the picture may not reflect the actual color of the item. Thanks for your understanding.