½" diameter nut compatible with Shimano® Hollowtech II™ or other 16-notch Ø44 mm bottom bracket cups, and 16-notch Rotor Disc Lockrings. Also fits the Shimano® bottom bracket tool adapters TL-FC24 & TL-FC25.
Additional info: | ½" bottom bracket wrench Shimano Hollowtech II™ |