Features: Brand new and high quality Eyelets for tarpaulins includes 50 sets of brass eyelet , 1 storage box. The holes have an inner diameter of 20mm and an outer diameter of 33mm. Eyelets and punch is made of copper with electroplating on surfaces, which has very good corrosion resistance and bright appearance, durable, not easy to rust. All 20mm eyelet are included in a compartment storage box, which makes it easier to find the corresponding component. The quantity of large eyelet punch enough for daily use. Cut a hole in the tarpaulin with the punching tool, then pick up the eyelet set, and finally fastens the eyelet set well with the attached tool. Suitable for jeans buttons, tents, tarpaulins, awning, curtains, canvas bags, belts, etc. Specifications: Material: Copper Color: Silver Internal Hole Diameter:Approx. 20mm/0.78inches Outside Diameter:Approx. 33mm/1.3inches Package Includes: 50x Eyelets 50x Washers 1x Storage Box note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.