Product Description The Comp Zero seatpost by Ritchey - double the security of your saddle The Comp Zero seatpost by Ritchey ensures a firm connection between saddle and seatpost and reliably prevents the saddle from slipping. To keep the saddle where it should be, it is attached to the post with two bolts at the front and rear. Whether you're riding bumpy singletrack or want to jam up a hill, the Comp Zero seatpost keeps the saddle in place. Specifications:Application:All Mountain, Cross CountryDiameter:27.2 mm, 30.9 mm, 31.6 mmLength:400 mmSetback:0 mmTechnical Information:Clamp:2-boltCompatible Saddle Rails:7 x 7 mm (standard), 7 x 9 mm (oval), 7 x 10 mm (oval)Material:aluminium (6061)Colour Index:bb black:blast black = black-mattManufacturer Numbers:27.2 mm / 400 mm / SB 0 mm:4103531705530.9 mm / 400 mm / SB 0 mm:4103531705631.6 mm / 400 mm / SB 0 mm:41035317057Contents:1 x Weight: bb black | 27,2 mm | 400 mm | 0 mm: 290 g 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