As an expert in the industry, our reliable brake pads are designed for M4, F30, F40, F20, Zoom DB280, DB550, DB450, DB350 models. These high-performance brake pads offer durability and all-weather protection for scooters with hydraulic or wire-based calipers. With a set of 6 pairs, our universal brake pads are the perfect replacement for your scooter's worn out pads.