2 Ball Joint Clamp The Mogo modular metal arm is great for creating a custom solution. The double ball arms allow for great flexibility to create a variety of different set-ups. Easily add length with extra clamps and arms or remove sections for something shorter. The system allows for sharp angles to work around objects or for optimal positioning. Each section is made from aluminum, keeping the arm light weight. Adjustments can be made quickly by loosening clamp to reposition.