The material is sturdy:We use heavy duty hard plastic material. Allowing our furntiure risers to withstand a variety of heavy duty furniture. Compared to other bed risers, our bed risers will not crack Adjustable design:Our bed risers come with adjustable screws. Easy to install. The first step is to clean the furniture legs first. The second step is to put the furniture legs on the fixed side. The third part is locked with hexagonal screws. After locking it is very stable, even if you move it, it will not fall off. Other bed risers are only glued and easy to fall off Wide range of applications:Our bed risers Suitable for adjusting most furniture legs. It can be adjusted from 0.85" 22(mm) to 1.65" (42mm) in diameter.If it is greater or less than this range, then it does not apply. The actual height increase of our products is 2 inches or 4 inches.You can choose the bed risers 2inch or bed risers 4inch Anti-slip and anti-scratch:The bed risers come with a high density of felt on the bottom. It protects your floor from damage and your tiles from scratches. You can move it even as a heavy duty counh risers. Don't worry. It will not damage your floor Wide range of uses:After being raised 2-4 inches by our bed risers. It is more convenient for the elderly to get in and out of bed. Also under the bed has increased storage space, you can store more things under the bed. The chair is raised to better fit your personal sitting posture. You will not feel back pain and more comfortable. It is also convenient for you to clean all corners after the furniture is raised Suggestion:We recommend that you measure the furniture legs first, and choose a product based on the right range of adjustment for you, and the height increase size Not suitable for any inclined furniture legs:Our product is only suitable for upright furniture legs. It is not suitable with inclined furniture legs. If you have any questions, you can always contact us. Happy shopping! Sephyroth Adjustable Bed Risers or Furniture Risers with Screw Clamp.Risers For Desk Legs.Chair Risers and Table Risers and Couch Risers.Fit Furniture's Square/Round Leg Diameter from 0.8''–1.6''4PCS