DOLLY FOR 20 32 44 55 GALLON TRASH CONTAINER DOLLY SIMPLY TWISTS ON AND OFF THE BASE OF 20 32 44 & 55 GALLON WASTE CONTAINERS TO CONVERT HEAVY STATIONARY TRASH RECEPTACLES INTO EASY-TO-MOVE PORTABLE CONTAINERS. DOLLY INCLUDES FIVE 3"" NON MARRING SWIVEL CASTERS. 250 LB WEIGHT CAPACITY. OSHA LISTED. SOLD INDIVIDUALLY.