Made from stainless steel known for its dependable and rigid strength as well as its quality. This type of steel is able to withstand drastic weather and temperature changes including placement within extremely humid areas. These qualities ensure hard-wearing making these screws and nuts virtually . Feature - ColorSilver - Mateiral: Stainless steel - Size: *6 *8 *12 *16 *20 *25 (10 pcs for each size) - Stainless steel screw and nut five sizes of socket head screws - All of screws nuts and washers will be packed in a sturdy convenient case, can be use for a storage box,is organized to you - Made of stainless steel which has dependable and rigid strength as well as quality - This kit can be widely used in all kinds of precision machinery, classified instruments, instruments, electronic products, household appliances, communication products, locks, lamps, lights, toys, etc. Package list: 60 Pcs x Stainless Steel Screws and Nuts