Prevent overexertion with the ABN Yellow Medium Bristle 4 Piece Drill Scrubber Cleaning Kit. Remove grease and soap scum without resealing grout. Use dry or with your cleaning solution as a tile scrubber drill attachment or drill shower brush cleaner. Scrub porcelain, wood, linoleum, and plastic in or outside your home. Small brush with 2-inch diameter and 1-inch bristles (5.1 x 2.5cm), large brush with 4-inch diameter and 1-inch bristles (10.2 x 2.5cm), extra-large brush with 5-inch diameter and 1-inch bristles (12.7 x 2.5cm), and round brush with 3.25-inch diameter, 3.5-inch height, and 1.25-inch bristles (8.3 x 8.9 x 3.2cm). 1.1-inch (2.8cm) shafts fit 1/4-inch hex drills. Color-coded yellow to avoid cross-contamination. For cordless drills and not intended for corded drill or grinder. Warning: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm.