How to change the wind shield wiper blade?

It is a very simple and not a hurry as you may see here the step,

1. Place up the viper blade perpendicular to the wind screen of your car.
2. Open the behind pin used either a test pen to remove the wiper blade
3. certain car will mount it with screw and you must remove the screw before you take it out,
4. replace the new viper blade and put back the viper into the origin position

Recommended :You should choose the silicone wiper blade cause it hos more longer lasting and more smoother than the rubber material.