Features 1. Durable: Made of metal material, the hole cutter and mandrel can be used for a long time; Each set of grommets and metal gaskets should be well matched and not easy to crack or fall off. 2. Perfect DIY Tools: This grommet tool kit provides an economical and affordable solution for repairing canvas, tarps, tents and pool covers, and is applicable to shoes, clothes, craft projects, etc. 3. Easy to Use: Easy to set the grommets in place with the hole cutter and matching mandrel; The mandrel has a distinctive pattern on the surface, anti-slip for a more secure grip. 4. Complete Combinations: The grommet kit includes a hole cutter, a matching mandrel, a flange and 100 sets of grommets (each set includes 1 grommet and 1 washer). The grommet can be more easily installed in place thanks to the hole cutter and mandrel. 5. Specification: The inner diameter of the grommets is 1cm/0.4in, the outer diameter is 1.5cm/0.6in. Flange Size: Outer Diameter 1.8cm/0.7in, Inner Diameter