Product Description Kool-Stop develops and produces all brake pads itself to always ensure the highest quality standard. All brake pads are rim friendly. Specifications:Brake Type:RoadCartridge Type:yesModels:black Conditions:for carbon rims, suitable for all weather conditionsRim Brake Track:carbon, medium-hardManufacturer Number:DURACFCompatibility:Shimano cartridge brakes (esp. Dura Ace, Ultegra, 105) / H2 cartridge holderContents:1 pair of Kool Stop R4 Dura brake padsnot incl. brake shoes Weight: black: 12 g Manufacturer: Kool Stop International Inc. 1300 SE 6th Ave Portland OR 97214 USA info@koolstop.com Distributor: absolut bikes GmbH Robert-Bosch-Str. 17 73760 Ostfildern Germany info@absolutbikes.de