[High Quality] These eyelet tools are made of solid metal, durable, corrosion-resistant and rust-proof. Inner diameter: 14mm, outer diameter: 23mm. [Easy to Use Design] Simple connection of rivet set, punch knife and matching mandrel. The characteristic pattern on the surface of the mandrel is very rough, which can prevent slippage and provide firm support. [Wide Application] These eyelets are suitable for denim, canvas, tarpaulin, tents, awnings and other fabrics, as well as decorative belts, backpacks, clothes, shoes, etc. [With Plastic Storage Box] All these rivet kits and tools are packed in a transparent storage box with a movable baffle, which is convenient for you to find the right components and save time. [Package Includes] The eyelet kit includes a hole punch, a matching mandrel and 100 holes (each group contains 1 hole and 1 washer) and a storage box. Size:14mm/100pcs Plastic box for easy storage Plastic storage boxes are ideal for storing small parts or tools and are easy