RAM® Handlebar U-Bolt Base for Rails 1" to 1.25" in Diameter - C Size RAM-202U-23 The RAM-101U-271-12 consists of a

The RAM-101U-271-12 consists of a double socket arm

The suction cup base is designed to have a strong hold on glass and non-porous plastic surfaces

The RAM-109VS-5NBU consists of two 6" straight swing arms with a drill-down base for vertical surfaces as well as a socket for C size balls

The answer is simple

allowing for near-infinite adjustability for ideal viewing angles

RAM® Handlebar U-Bolt Base for Rails 1" to 1.25" in Diameter - C Size RAM-202U-23 The RAM-101U-271-12 consists of aThe RAM motorcycle handlebar base contains a 1. 5" rubber ball designed to sit at right angles to the mounting rail. The rust proof metal u bolt accommodates rails in 1" to 1. 25" in diameter. The base also includes black cover caps to be placed over the exposed ends of the u bolt.