These are hand tools that I use along with the flat dies on my air hammer. They are made from a verity of material and objects. The three on the bottom are bearings (annealed of course). The next three are made of sections of coiled spring (from a car or truck). Across the top from the left are mild steel, hitch ball, unidentified x 2, and the rest are half round pieces of wrought iron or very soft steel.