A standoff is a fastener 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. Well manufactured surface without any bur, do no harm and feels quite comfortable. Waterproof, rust resistant. Easy to clean, you can simply clean them with a cloth. This set includes Female-Female, Female-Male standoffs in different sizes, screws and nuts. Well protected and assorted in a resealable transparent plastic box for convenient carry and storage. Easy to install. Durable in use. Description: 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. Female-Female, Female-Male standoffs of different sizes are all included in this set. Specification: Material: brass Color: gold and silver Standoffs length: 4~ 12mm (not include male end thread length) Male end thread length: approx. 6mm Thread: M2 (2mm) Thread pitch: approx. 0.5mm Waterproof, rust resistant. In a resealable plastic box for convenient carry and storage. Easy to install. Durable in use. Package Includes: 50pcs x M2*4mm Female-Female Standoffs 50pcs x M2*6mm Female-Female Standoffs 50pcs x M2*8mm Female-Female Standoffs 50pcs x M2*10mm Female-Female Standoffs 50pcs x M2*4+3mm Male-Female Standoffs 50pcs x M2*6+3mm Male-Female Standoffs 50pcs x M2*8+3mm Male-Female Standoffs 50pcs x M2*10+3mm Male-Female Standoffs 100pcs x M2*4mm Screws 100pcs x M2 Nuts Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.