The squeegee fits perfectly in your hand and you feel comfortable with it right away. The two-layer construction gives stability and flexibility at the same time. Different edge grindings of 30, 45 and 90 degrees allow different pressures to be applied. When window tinting, the liquid can be optimally worked out of the film and by simply turning the squeegee, the pressure can easily be increased. The DuoGreen is the harder and the DuoRed the softer version of this professional squeegee.