Pro Flexitube System Pro Flexitube is a revolution within modern tubedesign. For the first time a tube is made in two dimensions but in one piece! The back end works as an integrated hook guide, and the thinner front part of the tube allow the mounting of weights from the Pro Weight system, and of course fits perfectly to all the different add ons in the system. 40mm Integrated Hookguide or Junction @ 3.2mm 40mm Integrated Tying Surface @2.2mm 80mm Total Surface Length (just over 3 inches) 14 pcs/pk