BBB bottom bracket tool BracketPlug.Designed for mounting and dismounting 16-notch bowls with 44 mm outer diameter.Compatible with BTL-104 DriveForce and 24 mm wrench.Compatible with Shimano Hollowtech II.Centerlock compatible.BracketPlug.A tool for installing and removing certain components with 16-slot tool connectors, including bottom bracket housings, CenterLock disc brakes and electric bike motor lock rings.The BracketPlug is specially designed for Shimano Hollowtech II.It fits with the DriveForce ´´BTL-104´´ and together they make the perfect tool for the job.The strong, durable steel socket lets you grab the bracket and get the job done in seconds!.