Build your perfect classic lugged road frame with the Columbus Classic Road Lug Kit. Designed for skilled framebuilders, this kit includes all essential lugs and accessories for constructing a high-quality steel frame. Compatible with Columbus SL niobium tube series, the main triangle tubing supports diameters between 25.4mm and 28.6mm. Customize your set with Cicli Corsa to match your specific framebuilding needs and create a timeless masterpiece.