Product size: 8 adjustable table and chair platforms and 8 T-nuts, threaded shaft length 0.7in/18mm, round base diameter 0.86in/22mm, please check the size before purchasing to avoid unnecessary trouble High-quality material: The chair leg screw base is made of PP material, wear-resistant, non-slip, sturdy and durable, can withstand 100% bending and deflection under load, keep the furniture balanced and provide good shock absorption Easy to Install: Installation requires drilling and inserting T-nuts, suitable for wooden indoor and outdoor furniture legs larger than 1 inch in diameter. If the size is too small, there is a risk of cracking during installation. Metal furniture legs need welding or riveting 1/4 threaded inserts, non-professionals please do not operate WIDE APPLICATIONS: The furniture leveler is not limited to furniture, it is suitable for any application you want to balance, such as wood, laminate, hardwood, tile, carpet, etc., can be adjusted according to the height you need, avoiding direct contact with the ground Multifunctional: In the case of uneven floors, the adjustable feet allow the furniture legs to be adjusted between 1/4" and 3/4" in height, preventing the furniture from shaking, and also allowing the furniture to move easily, protecting the floor from Scratched, each product supports over 200 lbs Rukinovi 8pcs Adjustable Furniture Levelers,Furniture Legs Screw-in Leveling Feet for Table,Cabinets,Chairs,Stool Legs Furniture Feet Threaded Leveling Feet Glides