Easy to use: Put the lifter under to furniture and lift it (can lift your furniture to 2" high), then let 4pcs rollers into the 4 corners. It can bear 150 KG/330Lbs, so you can easily move furniture or heavy objects. Premium quality: Made by a durable steel body, PVC plastic spraying handle with anti-slip design. The 4 pack wheel rollers are made by ABS plastic.