These spike studs are made from durable alloy, with a plated surface that resists fading and wear. Smooth without burrs for long-lasting.The spikes for clothes feature a design with screw bases and nuts, ensuring even force distribution and secure installation.Includes a slotted screwdriver for easy installation. Simply drill holes and tighten the screw bases with the provided screwdriver.Suitable for various applications, it is perfect for decorating jackets, belts, shoes, bags, necklaces, etc. Great for DIY leather crafts.