Made from aluminum alloys for high strength and excellent wear resistance, this adapter is built to withstand demanding mountain biking conditions and help prevent breakage. Suitable for mountain bikes, it can be installed or replaced on either the front or rear of your bike for flexible setup and maintenance. A precise thread design ensures a perfect fit on your bike, delivering secure mounting and direct, reliable braking performance when you ride. This adapter lets you use a 44mm 6-bolt disc rotor with a Centerlock disc brake system, expanding rotor compatibility and keeping braking options open. 2-3 practical use scenarios - Upgrading an existing Centerlock brake to accept 6-bolt rotors without changing hubs, for improved rotor options. - Replacing a damaged or worn mounting on the front or rear to restore secure rotor fit and braking reliability. - Mountain trail setups where you want to switch between rotor styles or plan maintenance around rotor availability, keeping performance consistent on both ends of the bike.