Rubbermaid WaveBrake ® Bucket with Caster Kit. Patented design features molded-in wave baffles to reduce splashing. Buckets nest, even with casters, to save space. Mop handle secures during transport. Nonm-arking casters. 35-quart capacity bucket. For up to 32-oz. mop heads. Constructed of tubular steel and structural web molded plastic. Use with WaveBrake ® Wringers SKU#s 351448/351456 and Dirty Water Bucket 365862 (sold separately) to create a complete mopping system. Yellow.