Handle tools can be used to decorate ferrous or non-ferrous metals. Often used with treadle hammers or hand hammers. This texture is also available in round, square and eye shaped. Contact seller if you want to purchase a matching set with several different shapes in this texture. When texturing one piece of metal using several different shapes it is advisable to have all those shapes made with the exact same texture. Otherwise, where you overlap will stick out like a sore thumb. Because these tools are individually made we assign numbers to them. There may be another one of the same measurement but it will have its own characteristics.