Cleaning brushes for drills are designed forcleaning common surfaces in the home and workshop. Simplyattach the Strend Pro brush to your drilland start cleaning evenhard-to-reachandheavily soiled surfacessuch asjoints, gaps, wheels, upholstery, old containersand many other surfaces that can be cleaned with a regular brush. The set includes 4 brushes: - 1x 5 cm - 1x 8.80 cm - 1x 10 cm - 1x 12.70 cm.