Various combinations: grommet kit set includes hole cutter, matching mandrel and 100 sets of grommet eyelets (each set includes 1 grommet and 1 washer), and storage box Eyelet Pouch: Provide an economical solution for repairing canvas, tarps, tents and pool covers, good for shoes/laces, clothing, craft projects etc Easy to use: easy to set the eyelets of the eyelets in place with the hole cutter and the matched mandrel; The chuck has a distinctive pattern on the surface, anti-slip provides more secure grips Grommet Size: 6mm inner hole inner diameter, 2/5 inch flange outer diameter and length of 1/5 inch barrel With a plastic storage box: about 3.2 x 2.1 x 1.3 inch/ 8.2 x 5.3 x 3.3 cm, ideal for storing a small eyelet tool, easy to retrieve and apply when sewing