2 carbon brush holders for the RS550 motor and 4 carbon brushes for the drill driver [application]: Suitable for RS550 micromotor. [function]: Brush wear is usually the cause of poor motor operation. Replacing the brush can fix the intermittent motor. [packing list]: 2 carbon brush holders and 4 carbon brushes, excluding other accessories. < p>[durable material]: made of high quality materials, with long service life, high strength and durability, it is ideal for replacing old or worn parts. [Note ]: Due to manual measurement, please allow 1-3mm error. Project [application] : Applicable to micro - motor rs550. [function]: brush wear is usually the cause of poor motor operation. Replacing the brush can fix the intermittent motor. [packing list]: 2 carbon brush holders and 4 carbon brushes, excluding other accessories. < p>[durable materials]: made of high quality materials, with long service life, high strength and durability, they are an ideal alternative to old or worn parts. [Note ]: Due to manual measurements, 1-3mm error is allowed. Package: 4x carbon brush 2x carbon brush holders carbon Project specifications: Application: rs550 motor Materials: plastic, carbon Types of tool parts: brushes