It appears that the internal-wrenching hexagon drive may have been independently reinvented in various countries. At the least, the design (or methods of manufacturing it) was patented in various countries by various patentees, and its name varies. For example, in various European countries, it is known by the name Inbus (often misspelled *Imbus), after the company that patented them in Germany in 1936, Bauer und Schaurte of Neuss (Inbus stands for Innensechskantschraube Bauer und Schaurte). Similarly, there is another name in Italian (brugola), stemming from an Italian company's name.

isto sa wikija......objasnjava otkud nam to da se kaze IMBUS. Uticaj nemackog jezika. Kao i srafciger.