Short Arm: The double socket arm with an overall length of 3.5"(90 mm) Sturdy & Durable: The B size 1" ball medium arm is made of solid aircraft-grade aluminum alloy with powder-coated to ensure reliability and strength in the harshest conditions Wide Application: Compatible with RAM Mounts & VAZESWIN all 1"(25.4mm) ball components, can be used to connect two devices with B size 1" ball Universal Compatibility: Compatible with other 1" ball device holders, like bike car motorcycle phone mount, bicycle phone mount, action camera mount, navigation mount, marine electronic mount, cup holder and more Made of powder-coated, aluminum alloy for durability and reliability in the most challenging environments