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 brush2x carbon brush holders carbonProject specifications:Application: rs550 motorMaterials: plastic, carbonTypes of tool parts: brushes