1,Universal Compatibility: This bike disc lock cover is a versatile accessory that can be used with barrel axles and is compatible with mountain bikes. Its quick-release wheel kit allows for easy installation and removal, ensuring convenience for riders of all levels. 2,High-Quality Construction: Crafted from premium aluminum alloy, it boasts exceptional strength and durability. Its wear-resistant properties prevents rusting or deformation, guaranteeing long-lasting performance even in demanding conditions. 3,Perfect Fit with Central Lock Adapters: Designed to work seamlessly with central lock hubs, this disc lock cover can be easily installed on drum brakes. With compatibility for 9 or 12 or 15 or 20mm axles, it provides a secure and snug fit, offering maximum protecting for your bike. 4,Optimal Size and Design: Featuring an inner diameter of 26mm or 1.0in and an outer diameter of 44mm or 1.7in, this disc lock cover is specifically designed to accommodate the sizes of most bike center locks. Its compact size ensures a precises fit, preventing any unwanted movement or rattling during rides. 5,Reliable Safety Solution: The inclusion of this disc lock cover not only enhances the aesthetic appeal of your bike but also provides an added layer of safety. With its sturdy construction and perfect fit, it effectively protects your valuable bike component, such as the central lock and disc brake, from potential theft or damage. Color: Black or Red or Blue or Gold or Multicolor(optional) Material: Aluminum Alloy Item Size: Inner Diameter: 26mm or 1.0in Outer Diameter: 44mm or 1.7in Item Weight: 10g or 0.35oz Package Size: 50 x 50 x 10mm or 2.0 x 2.0 x 0.4in Package Weight: 30g or 1.06oz 1 x Center Lock Cover Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.