the "arm" is dremelholder:
http://www.duanesplanes.com.au/images/P/2222a.jpg
and the part on the end of "arm" - this is a tool which has came with bed from IKEA :
the "arm" is dremelholder:
http://www.duanesplanes.com.au/images/P/2222a.jpg
and the part on the end of "arm" - this is a tool which has came with bed from IKEA :