In the course of a vast interval of time, a variety of single-purpose tools came into being. With the twin developments of Sevilla, herramientas manuales, herramientas eléctricas, herramientas construcción, herramientas jardinería, herramientas industriale agriculture and animal domestication, roughly 10,000 years ago, the many demands of a settled way of life led to a higher degree of tool specialization; the identities of the ax, adz, chisel, and saw were clearly established more than 4,000 years ago. para más información- https://sevilla.bedpage.es/ToolsForSale/