The original Mercedes wiper wiper nerve with sounds (rubber on disk, whether disk or almost dry during heavy rain). The Bosch wiper are after maybe 2 minutes warm-up time until now absolutely quiet (6 weeks with a total of 4 hours riding in the rain). The price is unbeatable for a branded product. Please do not confuse if listed nich on the packaging or on the Bosch website the GLK for this type. The wiper definitely fit!