[Nice Assortment] A sizes of screws, nuts, and washers hardware assortment kit can meet your installation needs. There are 370 metric hexagonal countersunk machine screws bolts, 430 metric hex nuts and 430 metric washers in total. (All include four sizes: M2, M3, , M5) The average error is less than 0.01mm.[High Finish Quality] Passed 168 hours of high-concentration salt spray test and hardness test. Made of 304 stainless steel, which is corrosion-resistant, never , and durable. Beautiful and practical, high hardness, no deformation. The thread is neat, clear and deep. The surface is flat, smooth with high-quality workmanship.[Widely Application] This socket cap screws hex head bolt nuts washers assortment kit can visually cope with the repair and installation of occasions, such , equipment, production maintenance, toys and computer assembly etc. Bring more convenience to life. perfect for DIY and professional use.[Well Designed Sectional Case] All hardware comes assorted in a sturdy organizer box made of durable material. is equipped with locking lid, can effectively avoid the hardwares being scattered or lost during use. Not only give you the product, but also the storage system .Colour: silverMaterial: 304 stainless steelPackage Contents:1230 x Screw Bolt setOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.