Durable:These furniture caster cups are made of high-quality rubber materials, soft and odorless. The caster fixing pad is durable and never breaks to ensure firmness during use STRONG GRIP: The bed wheel stoppers adopt electrostatic adsorption technology to contact the ground surface, anti-slip and excellent floor holding Secure Furniture: Put these wooden floor protectors under your furniture’s legs to keep them firmly in place.It can stop your chairs, bed, sofas and other movables from sliding all over the room Fit Most Wheels: Suitable for home or office furniture with wheels. Such as bed frame, sofa, couch, chair, dresser, piano etc. There is no more wheels to roll across the floor and stay in place Suitable for A Variety of Furniture: This furniture castor cup is suitable for most furniture with wheels, like sofa, chair, desk, mobile dining table, dressing table, piano, etc. Each castor cup can withstand a certain amount of weight to lock the furniture or bed wheel and prevent unnecessary movement, With this rubber pads for furniture, there is no need to worry about scratching or damaging the floor