Product Description The GALFER Fixed Disc Wave brake rotor for mountain bike use is 2 mm thick and has a 6-bolt mount. Guidelines for Replacing E-bike Components:Before you replace components on your e-bike, please read through the guidelines for component replacement for CE-marked e-bikes/pedelecs with pedal assistance. Technical Information:Mount:6-boltDiameter:180 mm, 203 mm, 223 mmDesign:1-pieceRotor Material:stainless steelFeatures:2 mm thicklaser-cutstrong, controllable braking powerlightweight, quiet and low-vibrationparticularly heat-resistant due to high carbon content on the braking surfaceconsistent performance in dry and wet conditionswith corrosion protectionMade in SpainManufacturer Numbers:180 mm:DB003W2203 mm:DB004W2223 mm:DB007WContents:1 x 6 x bolts Weight: silver-black | 180mm: 140g silver-black | 223 mm: 229 g Manufacturer: INDUSTRIAS GALFER S.A. Ctra. Montmeló 50 Pol. Ind. Cal Gordi - Cal Català 08403 Granollers -Barcelona Spain bike@galfer.es