1set Risk Oil Disc Piston Reset ToolMTB Road Bicycle Hydraulic Brake Piston Press SpannerBrake Caliper Piston Extension Tools

The pistons on both sides are evenly stressed.Non metallic materials do not damaage the piston.Limit slot track,prevent centeer deviationPlastic material 3D printedNote: 3D Printing exhibits layering seam and other phenomena,belonging to process specific textures. It is not a quality issue which does not affect functionalities.Note: First, Remove the oil injection hole screw on the brake lever, connect the oil injection funnel, then pourin a small amount of brake oil that matches the model of the brake, and finally use the tool to reset the piston