These thumb tacks is made of natural wood and steel needles. The needle point is made of rust-resistant and corrosion-resistant stainless steel.It is not easy to bend or break, and is durable.Comes with 60 Count Wooden Push Pins in a clear plastic box which is convenient for keeping push pins neatly stored and your desktop organized.The push pin has a strong 1/2 inch grounded steel point and 1/2 inch wooden head, easy to insert and remove. The wood is specially treated to make it strong and durable. These thumbtacks are effective at fastening things to cork board, bulletin boards, notice boards, maps and hang photos and posters on. Note: Including cork boards, foam boards, and paper boards.