Tool-Free
•51mm Mechanical type for front&rear wheel
•Aluminum alloy
•Adjust Pad using Returnspring
•Metalliccompoundpads include
••Front adaptor Fit Both 160/180mm rotor
•Rear adaptor Fit Both 160mmrotor
•PMC post mount compatible----Just Take adapter away
•Note : Attach one wrench set if the pad adjuster turning wheel is too tight