Torelli Express OS Road Bicycle. Very Rare Columbus Oversize Neuron Tubing. One of the most advanced and light Nivacrom chromoly steel (1200 MPa). Classic round on the outside but differential butting internally to optimize strength. (for example, downtube and seat tube are internally ovalized). Beautiful Chromed Columbus EL fork. Hand-brazed in Italy by world famous Mondonico. Spectacular and durable blue…