Product Description Kit consisting of clamp and bridge. Features: Spare part for Ritchey 1-bolt seatposts For completing the Ritchey Mast Topper Compatibility: Only for aluminium seatposts Suitable for aluminium and carbon saddle rails Models: 7x7: For standard saddle rails 7 x 7 mm in diameter (standard saddles) Manufacturer Number: 55055467006 7x9.6: For oval saddle rails 7 x 9.6 mm in diameter (Fizik carbon saddles, e.g. Antares/Arione; tune Speedneedle;/Komm-Vor, Selle Italia Turbomatic/SLR kit Carbonio) Manufacturer Number: 55055467008 8x8.5:2For saddle rails 8 x 8.5 mm in diameter (older Selle Italia standard) Manufacturer Number: 55055467007 Contents: 1 x Ritchey clamp for seatpost 1 x Ritchey bridge for seatpost 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