Material: nickel-plated steel Size: total length: 60 mm Thread sleeve length: 16 mm Screw length: 23/5 mm Thread diameter: M4 High-quality materials: carbon steel screws and nuts are strong, resistant, and durable Nickel-plated surface for increased corrosion resistance Versatile design that fits most door handle sizes Easy to use and install on doors, furniture, and other objects Ideal for connecting door handles, locks, furniture, and more Shipping contents: 16 units