Low Profile Design: Low profile design adds mobility to load furnitures of different sizes. Three foam anti-slip pads on each furniture dolly offer better grip and protection to your heavy furniture90 Designed Lifter: 90 designed lifter with ergonomic handle, supported at 90right angle to prevent dislocation, balance stress, conforming to human engineering, flexible in operationDurable Furniture Movers: Thicken black power coat finish steel frame structure and double ball bearing bring strong load bearing support, 130lbs maximum load capacity for each 6 steel 3 wheel dolly360 Swivel Caster: 1.5 inches ageing resistance polypropylene caster with 360rotation top plate, easily transform to any directions that you want, enable you spend little strength to move furniture safely with this heavy furniture roller move toolEasy to Use: Set includes 4 furniture movers dolly, 4 jacks, 1 lifter, 4 heightening pads. Just put the lifter under the heavy object and lift it up, place 3 wheels rollers under the 4 corners of object. 4 jacks can make your lifting more high, meet your different object height requirement. This 3 wheels furniture movers dolly is great for moving heavy or medium sized furniture with legs or flat bottom, such as pool table, couch, cabinet, refrigerator, piano table, bookcase