AL6061-T6 alloy quick-release seatpost clamp with CNC machined cut-outsStainless steel bushing ensures smooth lever actionRounded edges and floating bolt/ovalized hole design protects carbon frames and seatpostsØ29.8mm for Ø27.2mm seatpost and chromoly frameØ31.8mm for Ø27.2mm seatpost and aluminum frameØ34.9mm for Ø30.9mm seatpost and aluminum frame, or Ø31.6mm seatpost and carbon frame16mm height31.8BlackAL6061-T6UPC/EAN/GTIN: 888571075555