Features Material: These hex nuts are made of 304 stainless steel which provides strength and offers good corrosion resistance in many environments. Good Alternatives: These hex nuts will be great replacement for industrial and construction fasteners. Variety of Sizes:A variety of commonly used hexagonal nuts of different sizes can basically meet your needs Wide Application: Used widely in the home and office appliance, communication equipment, ship assembly and other machinery industry. Includes Storage Box:140 pcs hex nuts of different sizes are put in the organizer by category, easy to store and use. And it is easy to categorize, so that the hex nuts will not be lost or mixed up during use. Specification:Material: 304 stainless steelSize & Quantity:M1*0.1      20pcsM1.2*0.1   20pcsM1.4*0.1   20pcsM1.6*0.1   20pcsM2*0.1      20pcsM2.5*0.2   20pcsM3*0.2      20pcsWeight: 48g / 1.7oz (approx.) Package list: 1 box * Nuts Package List