16Pcs Adjustable Levelling Feet M6 Thread Height Adjustable Feet for Furniture Feet Heavy Duty Furniture Levelers Glide Leveling Feet with T-Nuts Screw in Table Chair Feet Floor Protector. High Quality Material: The base of screw in levelling feet is made of PP material, wear-resisting, non-skid, sturdy and durable, protect your table, sofa, cabinet from scratching, keep your furniture balanced and also provide good shock absorption.