1.Aest bike bicycle hydraulic disc brake 2.AL6061 T6 3.CNC Machined 4.Brake oil SpecificationAluminum alloy parts are CNC manufacturing, ... structure design, and can be installed without taking apart brake lever ,Lyline clearance adjustable design, two fingers easily solved ... ; Create an oil disc briefly turn times.Brake oil use environmental protection mineral oil , using temperature 25 ...