Diverse combinations: grommet kit set includes a hole cutter, a matched mandrel and 100 sets of grommets eyelets (each set includes 1 eyelet and 1 washer), and a storage box Grommet kit: provide an economic solution for repairing canvas, tarps, tents and pool coverings, good for shoes/ shoelaces, clothing, crafts projects, etc. 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 Eyelets size: 1/ 2 inch (12 mm) internal hole diameter, 4/ 5 inch outside flange diameter, and 1/ 5 inch barrel length With a plastic storage box: about 55 x 32 x 13 inch/ 14 x 8 x 33 cm, good for storing small grommet , easy to fetch and apply when you sewing Grommet Kit, Grommet Setting and 100 Sets Grommets Eyelets with Storage Box (1/2 Inch Inside Diameter) Eyelets are made of environmentally friendly brass, thickened. Great for your different leather decorations. Perfect for shirts, jeans, jackets, bags and other crafts. Not easy to deform, not easy to become dull, durable. Uses: home clothes repair, clothing store spare, etc. Specifications: Colour: silver Material: metal Size: inner diameter 12cm Package Contents: 100 x eyelets 3 x Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.