Various combinations: eyelet kit set includes a hole cutter, a matching mandrel and 100 sets of eyelet grommets (each set includes 1 eyelet and 1 washer), and a storage box Eyelet pouch: provide a cost-effective solution for repairing canvas, tarps, tents and pool covers, good for shoes/shoelaces, clothing, craft projects, etc. Easy to use: easy to place the eyelets in place with the hole cutter and the matched mandrel; The mandrel has a distinctive pattern on the surface, anti-slip provides more secure grips Eyelet size: 12 mm (1/2 inch) inner hole diameter, 4/5 inch outer flange diameter and 1/5 inch barrel length With a plastic storage box: about 14.5 x 8.5 x 3.3 cm. ideal for storing small eyelets, easy to bring back and apply when sewing Product Details Product Name: 12mm air eye. Size: inner diameter 12mm Material: Brass Tools: 3 tools (the punch is a black punch) Color: silver Contents: 100 sets of air eyes + 3 tools + storage box Quantity: 100 sets Weight: about 320g Storage box size: 14.5 x 8.5 x 3.3cm. Uses: folders, tents, banners, yacht canvas, etc. Number of pieces delivered: 100 pieces becomeveryrich