AL6061-T6 alloy seatpost clampRounded edges and floating bolt/ovalized hole design protects carbon frames and seatpostsØ28.6mm for Ø25.4mm seat post and steel frameØ29.8mm for Ø27.2mm seat post and chromoly frameØ31.8mm for Ø27.2mm seat post and aluminum frameØ34.9mm for Ø30.9mm seat post and aluminum frame, or Ø31.6mm seat post and carbon frame16mm height28.6BlackAL6061-T6UPC/EAN/GTIN: 888571075319