LEIGAO Brand New And High QuanlityThis Is The Heavy-Duty Aluminum Oval Base Compatible.It Consists Of A 1" Diameter Rubber Ball Connected At Right Angles To A 1.93" X 1.50" Oval Base.Manufactured Of Powder-Coated Marine Grade Aluminum.Ball Size: 1" Rubber BallSpecification:Material: Rubber Aluminumcolor:blacksize:61*6*25mmPackage Includes:1 Piece Composite Oval BaseNote:1.We provide clear pictures, measurements where possible. Please check as much as possible to make sure the item is the one that you need.2. Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm)3. Instruction is not included.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand,Thank you.