I accidentally bought two of the same item, so I'm selling one. The following is copied and pasted from the website: [DIY Craft] This is a leathercraft punch for expressing beautiful curves and improving the quality of your work. It's designed to be easy to use, even for beginners, with a sharp cutting edge that requires minimal force. Please use a flat, hard surface as a backing. [High-Quality Materials] Made with stainless steel, it is rust-resistant and maintains its sharpness for a long time. It allows for beautiful edge finishing and hole punching, improving the work efficiency and precision of your leathercraft projects. [Product Details] Sizes: Approximately 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm; Package Contents: 7-piece hole punch set, 1 storage case