This 4-in-1 corner rounder punch features four different hole sizes: 4mm, 7mm, 10mm, and a corner cutter. It is designed for creating rounded corners on various materials such as photos, cards, and scrapbooking projects. The punch is suitable for crafts and DIY activities, allowing users to easily add smooth, professional-looking rounded edges to their work. Its compact design makes it easy to handle and perfect for detailed craft projects.