Various combinations: Eyelet kit set includes hole cutter, matching mandrel and 100 sets of eyelet eyelets (each set includes 1 eyelet and 1 washer), and a storage box. Grommet 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 place eyelet eyelets in place with matching hole cutter and mandrel The mandrel has a distinctive pattern on the surface, anti-slip provides more secure grips. Grommet size: internal diameter of the internal hole of 6.5 mm (1/4 inch), outside diameter of the flange of 2/5 inch and barrel length of 1/5 inch. With a storage box in plastic: approx 3.2 x 2.1 x 1.3 inch / 8.2 x 5.3 x 3.3cm, ideal for storing a small eyelet tool, easy to attach and apply when sewing.