quantity: the eyelet tool set includes a punch, assorted chuck and 100 sets of eyelets (each set includes 1 eyelet and 1 washer) and a storage box wide use: these durable tarpaulin eyelets are suitable for denim, canvas, tarpaulin, tents, awnings and other fabric items or other materials less than 1mm thickness easy to use: eyelet kit makes installation easy. First use the perforation tool to drill a hole in the tarpaulin (fabric), then take the set of eyelets and finally fix the set of eyelets with the attached tool. Please putA rubber pad ora wooden board when drilling holes to prevent the punch from fading. high quality: made of high quality cupronickel and galvanized surface, with very good corrosion resistance and bright appearance, does not rust easily. size: inner diameter: 12 mm (1/2 inch) and outside diameter: 21 mm (5/6 inch). With a plastic storage box, approx. 6.9 x 3.9 x 1.3 inches / 14 x 8 x 3.3 cmGrommet eyelet Kit, 12 mm eyelet Kit Metal tools eyelet sets100 Set Kit of eyelets for Baches sewing canvas tarpaulin tent Eyelets 12 mm Grommets Eyelets Metal tools Grommet eyelet Kit 100 sets of grommet eyelets, a black cutter, in a transparent storage box. the buttons are made of high quality metal. Durable buttonholes ideal for fabrics, tarpaulins, tents, awnings, belts, clothing, wallets, bags and other fabrics. the inside diameter of these copper eyelets is about 12 mm (1/2 "), the outside diameter is 21 mm (5/6"), the height is 5 mm (1/5 "). how to use it? drill the hole with a hole cutter - push the pass through the hole - place the seal on the pass - secure it with a hammer. advice some parts of the product are sharper. Wear gloves and protect your hands during use features : material: copper color: silver inner diameter: 12 mm (1/2 inch) outside diameter: 21 mm (5/6 inches) Quantity: 100 set package included : 100 sets of eyelets 1 x punch 1 x base 1 x installation rod note : please do not drill holes in thick materials. Please use it carefully to avoid hurting!