UNIVERSALBC Wiper Blade The rubber part uses the highest grade A graphite rubber The operation is extremely smooth and does not vibrate, and the glass water repellent coating can be used for a long time. The tournament part is made with thick steel plates. Some of the cheaper ones are made of thin iron plates that are not guaranteed to work stable. Please be careful. Flat wipers work great on flat windshields but may not fit Japanese glass with a relatively high curvature of curved Japanese cars.