Shimano TL-LR11 Lock Ring Removal Tool

The reviewer identifies the Shimano TL-LR11 as a lock ring removal tool designed specifically for low-profile disc brake lock rings found on Shimano's economy-level disc brakes and some e-bikes with limited rear hub space. He notes that these lock rings have shallower notches (about 2mm deep) that make them a nightmare to remove with improvised tools, and that a cassette tool will not work because the size is completely different. He presents the TL-LR11 as the proper solution, demonstrating that it fits perfectly, and observes that many cyclists suffer with these lock rings without knowing such a tool exists.