Double socket arm is made of high-strength composite material,which is sturdy and durable.It has extremely high reliability and strength,and is suitable for high impact and high vibration environments Ball Mount Arm can be connected to any compatible RAM Mounts and xsaaczm any B-size 1in ball,including mounting bases and device hodlers Socket Arm with Dual 1" Ball Sockets has 360 degree rotation function,and by turning the knob on the side,both ends of the socket arm can tightly grip the ball joint The extended arm is compatible with all industry standard 1in(25mm )spherical mounting arms,such as mounting bases,bicycle mounts, motorcycle mounts,electronic device mounts,navigation mounts,marine mounts,equipment mounts Easy to install.1 double socket arm,1 small hexagon wrench(excluding 1-inch ball components) Dual socket arm perfectly matches the 1in ball head accessory, compatible with RAM and xsaaczm, and has any industry standard B-size 1-inch spherical component. After connecting two components, it can achieve horizontal 360 degree rotation and vertical 180 degree rotation, maintaining stability in the most demanding environments