Columbus ZONA Over sized Road Seat Tube
- O.D. 1 - 32.7mm
- O.D. 2 -33.5mm
- Length - 635mm
- Butting - (L1 - 160mm) (T1 - 40mm) (LC- 315mm) (T2 - 40) (L2 - 80)
- Thickness -(R1 - .7mm)(RC - .5mm)(R2- .9mm)
The Zona family tubing is made from triple/double butted 25CroMo4 Alloy. These continue to be made in Italy.
Columbus PN# ZON113635001