Feature●▶ The ball base consists of a B size 1" ball, connected to a M10 x 1.25 male threaded steel post.●▶ TPU over-molding ball joint, wear-resistant and anti-slip, for durability and reliability in the most demanding environments.●▶ The 1 ball base allows for connection to RAM & BRCOVAN any B size double socket arm.●▶ The threaded hole must contain the following dimensions for this base to fit: M10 1.25 pitch with a 14.5mm flange diameter with a 10.15mm thread length.●▶ Pack of 2Description