Columbus Seat Clamps for External Butted tubes

A range of three all-new premium quality Aluminum light weight seat clamps
to perfectly match and complete the Columbus External Butted seat tubes
with non-standard outer-diameters.

Product Code: ZSC300 / Ø30mm
to be used with Columbus 29,4 and 29,8mm External Butted seat tubes

Product Code: ZSC325 / Ø32,5mm
to be used with Columbus 32,5 and 32,9mm External Butted seat tubes

Product Code: ZSC340 / Ø34mm
to be used with Columbus 33,5mm External Butted seat tubes