Specification Material: carbon steel, ABS, PVC Color: black, orange Furniture lifter load capacity: 400kg/880lb Pulley load capacity: 150 kg/330lb Application: sofa, bed, bookcase, refrigerator, washer/dryer, etc Key Feature: Universal Wheels: 360 rotatable wheel with very good maneuverability, it can be easily moved, and you can easily move furniture in any direction and clean it. Safe & Practical: The small wheels are made of plastic and will not harm the floor, ensuring that furniture and floors are not damaged. Labor Saving: With the furniture lifter tool set, you can move furniture all by yourself. Anyone can move heavy furniture or appliances. Easy & Convenient: Whether it is a professional porter or a family member, it can be easily used in the home, warehouse, store, garage, or other industrial environments. Package includes 4 x heightening blocks 4 x wheels 1 x crowbar 1 x storage bag Hinsinc 4Pcs Furniture Moving Wheels Set 880LB Lifter & Mover Tool-Heavy Duty in Black