1. [Easy to use]: Simple fastening of the rivet set with the appropriate hole cutter and mandrel. The characteristic pattern on the surface of the mandrel is rough to prevent slipping and provides a secure grip. 2. [With plastic storage box]: All of these grommet and tool sets are packed in a transparent storage box with removable baffles, which allows you to find the proper components and save time when making. manufacturing. 3. [Premium Quality]: These eyelets are made of sturdy metal, sturdy and resistant to corrosion and rust; With inner diameter: 10mm / 0.39 inch and outer diameter: 18mm / 0.70 inch. 4. [Useful Tools]: These durable tarp grommets are easy to use, suitable for denim, canvas, tarp, tents, awnings and other fabric items. 5. [Packing item]: The spout kit set includes a punch, matching mandrel and 100 sets of grommets (each set contains 1 grommet and 1 washing machine) and a storage box.