Heavy-Duty black polyethylene mixing tub. Job-site tough! 17 gallon maximum. General working size: 15 gallons/2 plus bags. Allows the operator to mix more thoroughly and easily, rather than in the tight confines of a 5 gallon bucket. Heavy-Duty black polyethylene mixing tub. hand grips on sides roll-over lip at the top to attach to RMX mixing station. Rugged Tough Tub for Mixing any job-site materials. Suiteable for use with any of our hand-held power mixers and specifically designed to work with our stationary mixers.