【SIZES】--- M2 x 4mm/6mm/8mm/10mm/12mm/16mm/20mm Hex Button Head Cap Bolts Screws. According with standardized metric system. And the average error is less than 0.01mm. Different sizes can meet your different using. | 【MATERIAL】--- Made of high quality 304 Stainless steel, which feature is strength and offers good corrosion resistance in bad environment like high temperature, cold weather, and high humidity areas. They have superior rust resistance and the excellent of oxidation resistance, which can ensure long time using. | 【PACKAGE】--- All of Bolts and Nuts are packed in a durable and sturdy Box to efficiently bear the weight of the whole package. In order to avoid the screws being scattered or lost during use, we specially package for each different type of screws for your convenience and storage. Not only give you the best product, but also the best storage system for them. | 【WIDE APPLICATIONS】--- M2 Hex Button Head Bolts Screws and Nuts Assortment Kit Serves a wide range of use and for professionals, amateurs, landlords, repairmen, other DIY . The set is perfect to replace broken and missing screws. When you are mad for the missing bolts, it is a perfect friend for you. The kit has lots of different sizes, which can meet the maximum of requirement for you. | 【Guarantee】--- If you have any question or suggestion, please feel free to contact us anytime. We will do our best to provide you a pleasure shopping experience.