- PREVENT FURNITURE TO SLIDING- Bed wheel stoppers adopt a square/round groove design, which more fits the wheels, prevents the wheels from sliding, and ensures stability. You will no longer hear the annoying scraping sound of wheels moving. - DURABLE MATERIAL- Felt Furniture Caster Cups is made of high-density felt and EVA that is eco-friendly, safe and odorless. Felt bottom design will not harm the your hardwood floor and prevent scratches from casters, make your furniture in place firmly. - PROTECTS ALL FLOORING- Use these furniture leg coasters to reduce friction. Furniture wheels stopper casters will protect any floor surfaces from the indentation of bedroom or household furniture. For any types floor-hardwood, linoleum, laminate, ceramic tile, carpet, etc., it is safe and effective. - FITS MOST FURNITURE WHEELS- We offer 2 size, one the inner size is round5.6*3cm, one is square: 5.6*3. Furniture Wheel Coasters Stoppers is suitable for most wheels. It for most bed, couch, chair, sofa, recliner, desk, table, dresser, sofa, bed frame with wheels. - EASY TO INSTALL- No need extra tools - just put your furniture wheels in the caster cups, it will not move. If you are not satisfied with the product for any reason, please feel free to contact us.