50PCS Classical Antique Brass Thickening Smooth Round Large Head Upholstery Sofa Rivet Nails Decorative Furniture Thumb Tacks (20mm x 25mm&iuml;&frac14;&circ;D H&iuml;&frac14;&permil;) Size: 20mm x 25mm / about 0.8" x 1" (Diameter * Height) Smooth antique brass finish surface, perfect to secure paper items or photos onto the the cork board. Eco-friendly, simple structure, easy to use, impact resistance,can be used for DIY, furniture and leather crafts, etc. Store in a dry place, do not pile up in the damp cold place to avoid rust or oxidation. Pls note: Please use pliers to catch nails before hammering, they are small and hammering them by free hand may be dangerous and cause shanks bending.