1、Durable: Made of metal material, the hole cutter and mandrel can be used for a long time; Each set of metal eyelets and gaskets shall 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 coverings, and is applicable to shoes, clothing, handicraft projects, etc. 3、Easy to Use: Easy to set the grommets eyelets in place with the hole cutter and matched mandrel; The mandrel has a distinctive pattern on the surface, non slip provides more secure grips. 4、Complete Combinations: Grommet kit set includes a hole cutter, a matched mandrel, a flange and 100 sets of grommets eyelets (each set includes 1 eyelet and 1 washer). The eyelet can be more easily installed in place through the hole cutter and mandrel. 5、Specification: Inner diameter of eyelets is 1cm / 0.4in, outer diameter is 1.5cm / 0.6in. Flange Size: outer diameter of 1.8cm / 0.7in, inner diameter is 1cm / 0.4in, barrel length: 2cm / 0.8in.