840 Pcs M2.5 Small Metric Screws with Nuts, Hex Socket Head Cap and Nut Assortment Kits, Carbon Steel Replacement Machine Fastener Screws and Bolts Nuts (M2.5 840 Black)Premium Material: The hex head screws and nuts and bolts are made of excellent carbon Steel material, which has good resistance to corrosion, rust and oxidation, sturdy and can ensure long term use. Easy to Use: Our m3 hex screws and bolts are sharp, clean and precise. And will not easily deform and slip during use. Deep and clear hexagon socket and head can make your work easier. Easy Storage: All hex socket head screws bolts nuts assortment kits are