Product Description For Rohloff riders: the 4-bolt Rohloff brake rotors by Hope With the Hope 4-bolt brake rotor for Rohloff you can use Hope disc brakes on a bike with Rohloff internally geared hubs. For the best possible quality it was laser cut and heat treated. The one-piece brake rotor is available in sizes from 160 to 203 mm. Technical Information:Mount:4-boltDiameter:160 mm, 180 mm, 183 mm, 185 mm, 200 mm, 203 mmDesign:1-pieceRotor Material:stainless steelApproved For:Brake Compatibility:Mono Mini, Mono M4, X2, M4, E4, V4Features:for Rohloff internally geared hubslaser-cut, heat-treated stainless steel brake surfaceManufacturer Numbers:160 mm:HBSP3301604R180 mm:HBSP3301804R183 mm:HBSP3301834R185 mm:HBSP3301854R200 mm:HBSP3302004R203 mm:HBSP3302034RContents:1 x Hope brake rotor4 x bolts Weight: silver | 180 mm: 142 g Manufacturer: Hope Mill Calf Hall Road Barnoldswick Lancashire BB18 5PX United Kingdom info@hopetech.com Distributor: bc GmbH Carlo-Schmid-Straße 12 52146 Würselen Germany info@bike-components.de