Feature:1. Fine aluminum alloy machining, ensures that the threads are perfectly suitable for your bicycle.2. With unique thread design, quickly, effectively and stably brake the bicycle.3. Excellent hardness can withstand brake wear and long service life.4. Made of high‑quality aluminum alloy, high strength, rust‑proof and durable.5. Useful accessories for cyclists, can be used for bicycles and mountain bikes.6. Easy to install and disassemble, which can be installed and replaced at the front or back.Specification:Condition: 100% Brand NewItem Type: Center Lock Adapter Material: Aluminum AlloySize: Approx. 52 x 18mm/2 x 0.7inCenter Distance: BCD 44mm/1.7inProcess: CNC anodizingFunction: Standard center lock 6-bolts disc brake rotor adapter.Application: Six-nail disc with 44mm hole pitch for middle lock hubPackage List:1 Set of Center Lock Adapter