These cleaning brushes with medium-hard nylon fibers are attached to an electric drill, making scrubbing faster and more efficient. The three brushes are of different sizes and have a hexagonal bracket of 1/4". The smallest brush is suitable for cranesand tile joints, among other things, while the medium-sized flat brush is well suited for furniture, bathtubs and walls, for example. The rounded end brush can be used for angles and corners, car rims and much more.- Cleaning brushes for electricdrill- Brushes are in different sizes- Has a hexagonal bracket of 1/4"Species:Color: Black, yellowMaterials: Plastic, zincMetrics, small brush: 4.5 x 4.5 cmDimensions, flat brush: 10 x 5 cmDimensions, rounded brush: 10 x 8 cmFix : Hexagonal 1/4"PackageContains:3x Cleaning Brushes