1.2.Made of Metal,New and unique design, in the back of tack have a pointed push pin, so you can fix the into someplace, more convenient in using3.Office and home: for holding up your documents, artworks, school projects, photos, notes, papers, ticket stubs, lightweight decoration and to-do-list4.combine the metal with push pin, the papers or whatever you are trying to pin without hole5.Suitable for cork boards, bulletin boards and cubicle walls for office school home and no holes for the paper Manufacturer warranty will not apply.Type:Thumb TackColour:BlackMaterial:metalSize:3x3.1CMPackage Contents:30x Clamps Office ClipsOnly 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.