Picture of a nail art cap silicone stamp

Quick answer：

Nail art cap silicone stamps are tools used in nail art design to create intricate patterns and images. These stamps are made of silicone and come in various designs. They are placed on the nail, and the design is transferred by applying a thin layer of nail polish over the stamp. The excess polish is then wiped away, leaving the desired design on the nail. This method is popular for its ease and the ability to create detailed nail art quickly.