Patented design features molded-in wave baffles to reduce splashing. Buckets nest, even with casters, to save space. Mop handle secures during transport. Nonmarking casters. 35-quart capacity bucket. For up to 32-oz. mop heads. Constructed of tubular steel and structural web molded plastic. Yellow. Use with WaveBrake Wringers no. 104975 and 11747 and Dirty Water Bucket no. 111772, sold separately to create a complete mopping system. Sold by the each.