If you want to select good wiper blades, there are four things to be considered.
Firstly, make sure that which kind of wiper blade your car is used, and you can refer to the car manual, which indicates that the wiper models have a look. In general, wiper blade can drive the metal supporting rod together to sell, less selling little single blade. As you do not know, you can make parts store clerk to help distinguish.
Secondly, note whether the way of the support rod's connecting to the wiper arm matches, because some arm is fixed to the rocker arm by using screws, when buying, you should stay in touch.
Thirdly, after pulling the wiper up, use fingers to touch rubber wiper blades that have been cleaned, and check for damage, and the elasticity of the rubber wiper blades. If the leaf aging, atherosclerosis, cracks, the wiper blade is not qualified.
Fourthly, during the test, the wiper switch is placed in various speed position, check wiper blades under the different speeds maintain a certain speed. Particularly in the working condition, but also pay attention to the wiper blade during exercise is to maintain a certain speed.