Product Description The as a retaining ring for your brake rotor The lockring from Wolf Tooth Components for center lock brake rotors is compatible with 12 mm, 15 mm and 20 mm thru-axle hubs as well as quick release hubs. It is made of high-quality aluminium. The lockring has a standard outer diameter of 44 mm and a 4 mm thick flange, so it fits all MTB frames and forks as well as many road bike frames and forks. Specifications:Material:aluminium (7075-T6)Outer Diameter:44 mmThickness (max.):4 mmTightening Torque (max.):40 NmCompatibility:thru-axle hubs (12 mm, 15 mm, 20 mm)quick release hubs (9 mm, 10 mm)all MTB frames/forksmany road frames/forks (unless a thinner lockring is needed)Features:standard dimensions for broad compatibilityanodisedMade in the USAManufacturer Numbers:black:RTRLCKRNGBLKsilver:RTRLCKRNGSILred:RTRLCKRNGREDblue:RTRLCKRNGBLUgreen:RTRLCKRNGGRNgold:RTRLCKRNGGLDorange:RTRLCKRNGORGpurple:RTRLCKRNGPRPContents:1 x 1 x stainless steel washerOrder Together:compatible tool: Wolf Tooth Components Pack Wrench Manufacturer: Wolf Tooth Components 6400 W 105th St Bloomington MN 55438 USA info@wolftoothcomponents.com Distributor: Cosmic Sports GmbH Leyher Straße 47 90763 Fürth Germany info@cosmicsports.de