Plastic Sturdy Construction: Crafted from high-quality solid ABS plastic, these heavy-duty round bed risers are exceptionally durable and reliable. They boast a remarkable weight capacity, safely supporting a total of up to 1,100 lbs when used collectively. However, it's crucial to ensure a proper fit before utilizing them. What's Included: You'll receive a set of six 4 inch furniture raising blocks, each featuring precise dimensions: 4" outside height, 4" top outside opening, and 3" top inside opening (please verify that furniture legs are not thicker than 3"). With a depth of 0.65 inches, they securely accommodate bedposts, elevating furniture by 3 inches. Versatile Use: Noamus black furniture lifts are ideal for raising beds, tables, sofas, cabinets, chairs, refrigerators, and washing machines. Not only do they maximize storage space and ease cleaning, but they also safeguard floors against scratches and corrosion. Intelligent Design: The top of each bed frame riser is equipped with a non-slip foam pad, effectively preventing furniture slippage and reducing noise caused by friction. Note that these risers are not suitable for recliners, and it's advisable to avoid moving furniture while risers are in use to maintain stability. Space-Saving Storage: Elevating your bed with these risers creates valuable storage space underneath, perfect for storing extra belongings, particularly in dorm rooms where space is limited. Additionally, the added height facilitates cleaning with a robot vacuum, enhancing convenience. You'll receive a set of six 4 inch furniture raising blocks, each featuring precise dimensions: 4" outside height, 4" top outside opening, and 3" top inside opening (please verify that furniture legs are not thicker than 3"). With a depth of 0.65 inches, these heavy-duty round bed risers securely accommodate bedposts, elevating furniture by 3 inches. Noamus black furniture lifts are ideal for raising beds, tables, sofas, cabinets, chairs, refrigerators, and washing machines. Not only do they maximize storage space and ease cleaning, but they also safeguard floors against scratches and corrosion.