Easy to use Simple attachment of tarpaulin eyelets with the appropriate hole cutter and mandrel. The characteristic pattern on the surface of the mandrel is roughened to prevent slipping and provide a secure grip With a plastic storage boxAll these rivet sets and tools are packed in a transparent storage box with removable baffles, which helps you find the right components and saves time QualityThese tarp eyelets are made of sturdy metal and are resistant to corrosion and rust. 8mm inner diameter1/3inch), outer diameter 14mm0.55inch), height 4mm. Useful ToolsThese durable paper eyelet tools are easy to use and suitable for denim, canvas, tarpaulin, tents, awnings and other fabric items. Package ItemsThe grommet kit set includes a hole punch, a matching chuck and 100 sets of eyelets (each set contains 1 eyelet and 1 washer) and a storage box.