If you own a W447 series vehicle, have you ever been annoyed by your wipers chattering? Wiper chatter refers to the wipers not moving smoothly, but rather catching and jerking across the windshield. This is a common phenomenon in Mercedes-Benz vehicles in general, and although the cause is unknown, there are various theories: ① Because the wipers are pressed strongly against the glass to withstand the wind pressure that occurs when driving at high speeds on the Autobahn, which has no speed limit. ② Because of Mercedes' strict safety standards, the wipers are designed to detach upon impact in a collision to prevent injury to pedestrians and occupants. In any case, chattering wipers are unpleasant, and you'll feel the urge to turn them off immediately. Therefore, many people replace their wipers with aftermarket products like the Bellof flat wiper. Also, Mercedes-Benz offers genuine silicone wiper blades that don't chatter, but of course, they are expensive. And now, we would like to introduce this product. This aftermarket wiper is compatible with all W447 series vehicles and, of course, does not chatter. It's a super-hydrophobic silicone wiper blade. It has durability equal to or better than the genuine product and has cleared the strict quality standards of BMTSR. The price is also surprisingly affordable, and it's a part that will surely satisfy you. We have verified this on our own vehicle. Due to being an imported product, the quantity is limited, so please take advantage of this opportunity. ※ This is a set of left and right wipers for the driver and passenger sides, and comes in a dedicated box. Also, the wiper rubber has a protective cover, so please remove it before use. Please refer to your vehicle's manual for installation instructions. Even a novice can easily replace them.