Central Lock Disc Lockring Cover — quality aluminum alloy construction provides corrosion resistance and exceptional strength for reliable rotor retention. Key benefits Secure, boltless locking: locks the rotor in place without extra bolts or screws, simplifying installation and reducing parts that can loosen or corrode. Durable material: made from quality aluminum alloy for antirust performance and longterm strength under load. Broad compatibility: works with 6bolt disc brake systems and fits Thru Axle Center Lock hubs of 9 mm, 12 mm, 15 mm, and 20 mm sizes, covering a wide range of hub standards. What this solves Reduces maintenance time by eliminating the need for additional fasteners and frequent retorquing. Prevents corrosionrelated failures thanks to aluminum alloy construction, extending service life in wet or salty conditions. Provides a stable, solid connection between rotor and hub so braking performance remains consistent ride after ride. Key features at a glance Product: Central Lock Disc Lockring Cover Material: quality aluminum alloy (antirust, strong) Compatibility: 6bolt disc brake systems; Thru Axle Center Lock hubs (9/12/15/20 mm) Locking style: Boltless — no extra bolts or screws required Typical use scenarios Trail or mountain riding: a worn lockring or secure a rotor quickly when riding in muddy, wet conditions where corrosion is a concern. Wheel or hub swaps: Fit this cover when converting or pairing rotors and thruaxle center lock hubs of 9/12/15/20 mm to ensure a stable, bolt lock. Commuter or allweather cycling: Use it to minimize maintenance and avoid rustrelated issues on dailyuse bikes exposed to rain or road salt. Installation notes Designed for straightforward installation and use. Follow hub and rotor manufacturer instructions for proper seating and torque as applicable. This cover delivers corrosion resistance, dependable strength, and easy, bolt rotor locking for compatible disc brake systems and center lock thruaxle hubs.