Hollow rivets have been increasingly popular in recent years due to their wide range of applications, including the clothing, footwear, and luggage industries, among others. This product's grommet is made from hard wire material, capable of piercing steel plates up to 0.5mm thick without pre-drilling. The rivets cannot bend or deform, making them widely used in safe deposit boxes and travel cases. Hollow rivets, made from soft wire, are generally required not to crack after riveting and come in various types. Now, semi-hollow rivets or parent-child rivets are increasingly being used in the axles of some toys, significantly reducing production costs. Core-pulling and impact rivets are commonly used for bonding thin and soft materials, with less stringent requirements, and are typically made from materials with good plasticity.