WaveBrake® Dual-Water Combos-35-Qt. Reduces cross-contamination: Unique "bucket-in-bucket" design separates clean and dirty water, which reduces cross-contamination potential and leaves a cleaner, less slippery floor. The quiet caster dolly allows you to work quietly in noise-sensitive environments, day or night. Bucket capacity: 35-qt. Wringer capacity: up to 32-oz. mops.