Precision Engineered for quiet operation. Non-marking red casters to easily identify traditional dollies from quiet dollies. Eliminates 88% of traditional dolly noise across both smooth & uneven surfaces. Twist lock feature secures containers to the dolly. Color(s): Black; Dolly Size: 18.25" Diameter x 6.63"h; Capacity (Weight): 250 lbs; for Use With: Brute 32-Gallon, 44-Gallon, & 55-Gallon Round Waste Containers.