Feature:1. Aluminum Material: Made of high quality aluminum alloy with high strength, rust resistance and durability, no easy to deform.2. CNC Machining: CNC machining treatment can make the smooth, and can also prevent wear and tear.3. Size Situation: The inner diameter of locking is about 26mm/1.0in, outer diameter is about 44mm/1.7in.4. Universal Type: Can be used for barrel shaft, compatible with mountain bike, very easy to install and remove with the quick release whelset type.5. Using Method: Using with centerlock adapter, mount on the middle lock hub, 9/12/15/20mm axis are all available, so that it can install 6 disc.Specification:Item Type: Centerlock LockringMaterial: Aluminum AlloyApplication: For Thru Axle Hub, Bike, Mountain BikeProduct Size: Approx.ID: 26mm/1.0inOD: 44mm/1.7inWeight: Approx.11g/0.4oz Package List:1 x Centerlock Lockring