A standoff is a fastener that is used to create space between two objects, often to properly position them. In the world of electronic components and electronic hardware, standoffs are typically used to space circuit boards, panels, doors or gears. Features: Made of high grade brass and stainless steel for solid and long service life. Well manufactured surface without any bur, do no harm and feels quite comfortable. Waterproof, rust resistant and easy to clean. Includes Female-Female, Female-Male standoffs in different sizes, screws and nuts. Resealable transparent plastic box for convenient carry and storage. Widely used in electric equipment, automotive, engineering machinery, and other fields. Specifications: Main material: stainless steel+brass Package weight: 208g / 7.33oz Package size: 125 * 65 * 20mm / 4.92 * 2.56 * 0.79in Package List: 1.Screw: 20pcs * PM25mm (DH) 20pcs * PM36mm (DH) 2.Nut: 20pcs * M2 20pcs * M3 3.Female Brass Standoff: 10pcs * M25mm 10pcs * M210mm 10pcs