1/2pcs Shimano Dura-Ace/UT/105 Internal Disc Brake Centerlock Alloy Lockring
It is fully compatible with Dura-Ace (DA), Ultegra (UT), and 105 series hydraulic disc brake models featuring an internal hose routing design (e.g., Dura-Ace R9200, Ultegra R8100, 105 R7100, and their corresponding generation models).