1.1. Love for detail: A PP dust cover prevents hair from getting tangled and the bearings from getting dirty. Flowershaped rivets are used, which are robust and easy to use. The plate frame is effectively connected. Nylon pedals and manganese steel brake pads are used, and the double brakes are more stable. 2.2. Leaves no traces: They are made of synthetic rubber, are quiet and smooth, do not wear easily, have good performance and a long life. The rubber material leaves no marks or scratches on any floor, which can protect your floor and also your baseboards from scratches. 3.3. High load capacity: The roller bracket is made of steel plate, which has a long life, is wearresistant, quiet, and shockabsorbing. Each plate roller has double support bearings, which are thickened, stable, and wobble. The singlewheel load can reach 100 kg/220 lb 140 kg/300 lb. A set of 4 heavyduty rollers makes it easier for you to move objects. 4.4. Smooth movement: Ours can rotate 360 degrees and move smoothly. They are greaselubricated and have good performance. They can be used normally in rough environments. It is very easy to move and transport furniture. Turning is effortless, and they can also rotate easily under heavy loads.