●【Relaible Quality】--- Made of high quality 304 stainless steel,with a density of 7.93 g/cm³. whose high temperature resistance is up to 800°C, has good processing performance and high toughness, corrosion resistance, heat resistance, low temperature strength ●【Various Sizes】--- the kit includes M2 M3 M4 M5 hex flat head cap bolts with matching nuts, washers and wrenches; total is 940pcs ●【Handy Box】--- This set is organized by size in a durable and sturdy case, which is easy to get the bolts you need and convenient to put off your tiny parts ●【Wide Application】--- hex flat head bolts washers and nuts assortment kit serves a wide range of use and for professionals, amateurs, landlords, repairmen, other DIY; The kit covers the most common sizes, which meet your requirement ●【Service】--- VIGRUE provide lifetime service for our product quality problem, if you have any question or suggestion, please feel free to contact us. We will do our best to provide you a pleasure shopping experience. If you need a single size or different quantity, welcome to contact