Extend Your Rear-View In Safety Security: Convex Unit It's all about the mirror. This one features a large rectangular mirror 170(W) x 105(H)(max)mm with slightly convex optics. The convex shape magnifies the rear vision image slightly improving image clarity. The mounting arm gives 300mm (1 ft) of clearance from the side of your car/RV. The arm itself has strong neoprene rubber and heavy duty plastic clip hardware to attach to your existing external rear-vision apparatus. The mounting straps minimise the view loss from your standard apparatus. A thoughtful safety lanyard is also supplied. All black colour Easily removed for stowage Sold individually Width : 170.0mm Height : 105.0mm