To replace the wiper blades of a tool is required.
1. Pull the wiper arm away from the glass against the force of the spring arm ...
2. ... turn the brush perpendicular to the arm, squeeze the adapter brush, slide the brush down on the lever to release the adapter from the hook of the lever and moving the hook of the window brush holder, remove the brush from the lever upwards.
3. Place the brush in the reverse order of removal. This adapter brush type in the hook of the lever until it clicks.