Hex-shaped hand tool used for internal screwing.
Manual tool is usually used for construction and repair work that requires simple execution with low energy use.
Tools are instruments aimed at performing a mechanical task when some kind of force is applied to them. There is a wide variety of tools, such as cutting, clamping, hitting, joining, assembling or measuring tools.
Standards: NF ISO 2936, ISO 2936, DIN ISO 2936, ASME B18.3.2M