The 22″ Heavy Duty White Disk Scrub Brush for SUNMAX scrubbers is perfect for commercial cleaning. Built with a strong frame, this brush can withstand heavy-duty jobs while providing excellent cleaning performance. With a 22″ diameter, this highly durable scrub brush is designed to fit perfectly within the RT50, RT50+, RT50D, RT50D+ and RT70, RT70+ models. Medium gauge brushes (19 – 21 gauge), good for all-purpose cleaning on most floor types, including tile, grout, and wood. Shipping and Return Free Freight Shipping to 48 states of America Process in 2 Business Days, deliver in 2 weeks 30-day Money Back Guarantee (Free return for quality issues or shipping damages within 30 days after delivery)