Features: Upgrade your bike's braking systems with this universals 6 bolt to centerlock converter, crafted from light weight aircraft grade aluminum for durability compatibility across major bicycles brands. Features simple installation and precisions engineered hexagonal locking mechanism that ensures vibrations resistant stability during high speed cycling or rough terrain adventures. Ideal for commuters, cyclists, and competitive riders seeking reliability brake rotor conversion solution without compatibility concerns. Perfect for mountain trail excursions, daily city rides, or bike maintenance workshops requiring quick hub adaptation between disc brake standards. Oxidation resistant coating protects against rust and corrosions, maintaining smooth rotor alignment and consistent braking performances through wet conditions or long term storage. Specifications: Color:Two Choices Dimension:5.2×3.5cm/2.05×1.38in 2.6×4.8cm/1.02×1.89in Component:Aluminum alloys Package Includes: 1Set Center lock disc adapter note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.