Product Description The replacement clamp for the WCS 1-Bolt Carbon seatpost by Ritchey replaces your old, damaged clamp plate or adapts your seatpost for carbon saddle rails. Compatibility: WCS 1-Bolt Carbon Seatpost Models: 7x7: Compatible Saddle Rails: 7 x 7 mm (standard) Manufacturer Number: 55055467009 7x9.6: Compatible Saddle Rails: 7 x 9.6 mm (oval) Manufacturer Number: 55055467011 8x8.5: Compatible Saddle Rails: 8 x 8.5 mm (oval) Manufacturer Number: 55055467010 Contents: 1 x Ritchey WCS 1-Bolt spare clamp Manufacturer: Ritchey Design Inc. 575 Old County Road San Carlos, CA 94070 USA info@ritcheylogic.com Distributor: Cosmic Sports GmbH Leyher Straße 47 90763 Fürth Germany info@cosmicsports.de