Chesini Prima Gold Leaf: Sloping geometry. Columbus Spirit Oversize tubes, tig welding (filet brazed optional). Asymmetric chain-stay, eliptical diameters of the seat-stays, ovalized section of the seat tube at the bottom bracket, head tube 1”1/8-1”1/2, bottom bracket BSA, Columbus FEL carbon fork. Custom size and colors. Frame with very limited lateral flexion while maintaining the ride comfort at the highest level, without equal in the long distances or on roads with rough or bumpy road surface.