Buy on Amazon : http://www.amazon.com/gp/product/B000JLM4XG?tag=scratchandsti-20
Manfrotto 035 Super Clamp without Stud - Replaces 2915
Attaches to tubes from 5 to 2 inches
Supports up to 33 lbs
Attaches to many accessory arms including Manfrotto Magic Arms
VideoDorks
BookDorks
AudioDorks
CssDorks
TVDorks
PhotoDorks
ThemeDorks