Description: [Material] Made of carbon steel, the hex standoff spacer has a smooth surface without burrs and is corrosion-resistant and high-temperature resistant. It has high hardness, is strong and durable, and is not easy to deform. [Features] The standoff spacers adopt a six-sided design, which is easy to grip and can achieve maximum torque, allowing you to tighten easily and efficiently. [Easy to Install] Motherboard assortment kit comes with hexagon nuts and cross head screws, it is easy to install and only needs to be tightened with a wrench to assemble and connect two parts and be careful not to over-tighten. [Wide Application] Coupling nuts can be widely used in furniture repair, office equipment, automobile, mechanical industry, communication equipment, etc. Specification: Material: Carbon Steel Color: White Hex Standoff Spacer Threaded Size: M4 Pitch: 0.7mm Thread Diameter: 4mm/0.16" Hex Standoff Spacer Total Length: 12mm/14mm/16mm/18mm/21mm/24mm/26mm/31mm/36mm Hexagonal Width Across Flats: 6mm/0.24" Cross Head Screw Threaded Size: M4 Cross Head Screw Pitch: 0.7mm Hexagon Nuts Screw Threaded Size: M4 Hexagon Nuts Pitch: 0.7mm Package Content: 90 Pcs x Coupling Nuts Hex Standoff Spacer; 10 pcs of each size. 30 Pcs x Cross Head Screw Threaded; 30 Pcs x Hexagon Nuts