Adapts 35mm Center Lock rotor-mount splines to accept an International Standard 6-bolt, 44mm BCD rotor Does not fit Saint-style 47mm Oversize Center Lock, and will not work with thicker, aluminum-carrier Hope 2005+ style Mono-series rotors Designed for up to 230mm rotors Tabs in adapter mate to (6) M5 rotor bolt holes and is secured by Center Lock-style lockring, sandwiching 6-bolt rotor to adapter Lockring requires a 16-notch external bearing bottom bracket wrench CL-IS adapter is black and lockring is black with silver etching: 29g SOLD INDIVIDUALLY