The ball mount consists of a size B 1inch TPU ball attached to a M6 x 1.0 male threaded steel post.TPU overmolded ball joints are non- and abrasion resistant for durability and reliability in the most demanding environments.The 1inch ball base allows for connection for RAM & any B size 1 inch ball double socket arm.Threaded holes must contain the following dimensions to fit this mount: M6 x 1.0 pitch.Fitment:For RAMColour:BlackMaterial:Rubber+MetalPackage Contents:2 * bracketOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.