<p> Suitable only for very robust, hard surfaces such as stone or tile, as the stiff plastic bristles are embedded between the microfibers. Not suitable for soft surfaces like wood or natural stone such as marble. Contains high-quality microfibers, machine washable up to 60 degrees Celsius. Do not use fabric softener. The stiff bristles make it easier to clean stubborn dirt from surfaces and grout. Thanks to the embedded bristles, the stone roller set effortlessly removes stubborn dirt and leaves even grout and uneven surfaces sparkling. Compatible with: Kärcher FC7; FC7; BC5; Heart Rate 5; Cordless FC5; Cordless FC5; Cordless FC3; Cordless FC3. Replaces part number: 2.055021.0, 20550210 Color: Gray + White Material: Plastic Size: 60 x 150 mm Package Contents: 4 * Stone Roller Brushes 1 * Cleaning Brush Only the above package contents are included; other products are not included. Note: Light shooting and different monitors may cause the color of the item in the picture to be slightly different from the real thing. The allowable measurement error is +/- 13 cm.</p>