This furniture lifting and moving set includes a heavy duty lifting tool and four sliding rollers that support up to 330 pounds. Works best on flat surfaces, does not work as well on carpet. No assembly or additional tools are necessary - simply roll the lifter underneath the middle of your appliance or furniture and push down to lift. If you need more height, two rollers can be stacked with one upside down to hold the lifter in place. Slide the rollers underneath the corners/legs of the object you need to move, then repeat lifting and positioning the rollers underneath on the other side. You can now roll your appliance or furniture around with little effort. The rollers can be turned in place to a different direction if needed. Use the lifting tool again to remove the rollers once you are done. Each of the four sliding rollers are rotatable, allowing you to easily adjust them to move in different directions. Works great for refrigerators, washer/dryers, sofas, chairs, bookcases, desks, and other heavy objects. It is perfect for making quick leveling adjustments, cleaning underneath your appliances, and rearranging your furniture.