Hydraulic operating device

A hydraulic operating device comprising:

• a base member including
• a cylinder bore having a cylinder center axis,
• a first hose-attachment hole configured to be in fluid communication with the cylinder bore, the first hose-attachment hole having a first center axis that is not parallel to the cylinder center axis,
• a second hose-attachment hole configured to be in fluid communication with the cylinder bore, the second hose-attachment hole having a second center axis that is not parallel to the cylinder center axis, and
• an additional hole configured to be in fluid communication with the cylinder bore;
• an operating member pivotally coupled to the base member about a pivot axis;
• a piston movably provided in the cylinder bore and operatively coupled to the operating member to move relative to the base member in response to a pivotal movement of the operating member;
• and
• a mounting member configured to couple the base member to a handlebar, the mounting member including a mount opening through which the handlebar is to extend, the mount opening having a mount center axis, wherein
• the additional hole is provided between the first hose-attachment hole and the second hose-attachment hole in a mount axis direction parallel to the mount center axis as viewed along the pivot axis.

A hydraulic operating device comprising:

• a base member including
• a cylinder bore,
• a first hose-attachment hole configured to be in fluid communication with the cylinder bore, and
• a second hose-attachment hole configured to be in fluid communication with the cylinder bore;
• an operating member pivotally coupled to the base member about a pivot axis;
• a piston movably provided in the cylinder bore and operatively coupled to the operating member to move relative to the base member in response to a pivotal movement of the operating member;
• and
• a mounting member configured to couple the base member to a handlebar, the mounting member including a mount opening through which the handlebar is to extend, the mount opening having a mount center axis, the mounting member being provided between the first hose-attachment hole and the second hose-attachment hole in a mount axis direction parallel to the mount center axis as viewed along the pivot axis.