Several sizes: The package includes a variety of flat -steel flat nails in different sizes to adapt to your different projects. Nail sizes: 60 x 3.9 mm, 50 x 3.2 mm, 30 x 2.2 mm, 25 x 2.2 mm, 20 x 2.2 mm. High quality materials: nails are very hard And sharp enough to keep them straight when hammering, they can be used in various types of materials, including concrete, wood and plaster. widely used: this nail game can be used with hooks to hang objects, photo frames, weddings , exhibitions, etc. It can also be used for carpentry, set wall shelves and repair small things, handmade arts or other DIY projects to improve home.