High-temperature resistant polypropylene buckets are seated firmly within cart base, interlocking when placed side by side to reduce spillage. Non-porous, super smooth surface prevents microbial growth. Embossed graduations in English for accurate measure. Stainless steel handles will not rust, corrode or oxidize. TruCLEAN Pro Triple-Bucket system includes (3) 15 Liter buckets. Unique hydrophilic foam ideal for spill control, holds up to 15 times its weight in liquids. Quickly dries surface without leaving any residue. Special open cell formula is impervious to most chemicals. Durable and tear-resistant, even after repetitive use. Soak prior to use for easy mounting on TruCLEAN® mop frame.