Description:

12.9 grade alloy steel material with oxidation surface has good strength of extension and corrosion resistance in many environments. Total in a transparent box that are commonly used size, easy to use and install. Ideal for use in confined areas where the head needs to be flush or below the surface. Used for fasteners in home and office appliance, communication equipment, ship assembly or other machinery industry. Screws and nuts are well packed in 10 compartments, a wide range of use and for professionals, amateurs, landlords, repairmen, other DIY.