General description vhbw offers a robust carbon brush designed for use with various Beam central vacuum cleaners, including models 677 ES, 69, 90, and SC 3500. These motor brushes are essential for transmitting electrical current from the stationary part of a machine to its rotating motor or generator. Over time, carbon brushes wear out, which can lead to decreased performance or malfunction of your device. To maintain optimal functionality, it is crucial to replace worn-out brushes with high-quality alternatives. Technical specifications Material: graphite Dimensions: 28 x 11 x 6.3 mm Holder dimensions: 45.3 mm Weight (set): 32 g Compatibility and accessories Compatible with Beam models: 677 ES, 69, 90, SC 3500 Replacement for part numbers: 850228, 333261, 2311480, 33326-1 Other information Content of delivery: 2x carbon brush