Bosch H304 Wiper Blade - Single is made from plastic with dual wiper rubber manufactured to match specially styled rear wiper blades. With the growing numbers of estate cars, square-back vehicles and vans on our roads, you can't always count on having a clear view out back. Rain and dirt quickly turn the rear window into a visibility and safety risk. Bosch specific fit rear-screen wipers ensure that your view remains unobstructed under these difficult conditions - with reliable, safe and lasting high quality.