General description Replacement Parts Brush for 600 Series 694, 690, 680, and 675 is designed for high performance and durability. Made from high-quality materials, these uniquely designed brushes feature rubber treads that adapt to various floor surfaces, effectively removing everything from small dust particles to larger debris. Regular maintenance is essential for optimal performance. Technical specifications Material: Plastic Package Contents: 4 pairs of roller brushes, 2 cleaning tools Allowed measurement error: +/- 1-3 cm Usage It is recommended to replace the spare parts every 2 to 3 months to ensure the machine operates at its best performance. Other information Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the actual product.