BBB / BTL-199 tool 41mm 16 Notch lockring tool Suitable for enviolo threaded freewheel lockring Interface for 36mm flat wrench or torque wrench Interface for 16-notch tool fittings with a major diameter (outside of notches) of 44–45 mm and a minor diameter (inside of notches) of 42.7 mm Lockring mounting torque 35Nm - 45Nm
