This is a very high quality product and is manufactured with the highest quality materials available. The mirror screws are high-grade stainless steel and turn in brass inserts that will never corrode. The mirror glass is chrome safety glass. The unique and new clamping system (patent pending) offers an outstanding and versatile system, which is engineered to fit all current 2007 cars, 4x4's and vans. This system has easy to use thumb wheels on tilting axis, which enable the clamps to 'shape' to the contours of the vehicles mirror, allowing totally versatile fitting. Another innovation of this design is the upgraded gripper system, so you do not loose the grip pads. This design also does away with unreliable straps that transfer vibration. The mirror head design  utilises airflow around your car to stabilise and balance the mirror head at speed. This mirror has been extensively tested at speeds up to 155mph (250 kph), to ensure that you get the best vision possible.