🤶【Compatible with iBOLT mount 20mm ball adapter】Dual socket arms compatible with iBOLT holder 20mm ball adapter, can connect all brands of 20mm ball head base and phone holders with 20mm ball head, length 62mm/2.44 inche, for quad lock motorcycle phone holder, bicycle riser phone holder, vehicle phone holder and other devices with 20mm ball head assembly, if you need to mount GPS device or surveillance camera with 20mm ball head to your boat phone holders, this 20mm ball joint is perfect choice. | 🤶【Unique design】Double socket arms are ergonomically designed to fit perfectly into the 20mm ball mount, connects tightly with the cell phone holder and is not easy to come loose, remains stable even at high speeds on bumpy roads, dual socket arm weighs only 55g lightweight and portable, easy to store in your pocket or backpack, small size does not take up much space can be quickly mounted and dismounted without tools, which makes your cycling trips more convenient and efficient. | 🤶【Long service life】High quality 20mm ball double socket arm combined with the chara cteristics of the product, using aluminum alloy, stainless steel, copper three materials, higher strength is not easy to damage, the surface of the III stage hard anodic oxidation treatment, smooth feel corrosion rust, has a very good durability and carrying capacity, is the motorcycle phone mount, bicycle cell phone mount, kayak cell phone holder, car GPS mount etc long-term use of a good choice. | 🤶【360° Rotation】The 20mm ball head phone holder connecting rod adopts a labor-saving butterfly knob to easily adjust the tightness and height of the motorcycle accessory dual socket arms, socket connection part can be rotated 360° to freely adjust the horizontal or vertical direction, making it convenient for you to use your smartphone for playing music, making video calls, viewing maps etc, has the characteristics of convenience, flexibility and stability, has perfect riding vision. | 🤶【Lifetime warranty】This double socket arm comes with lifetime warranty, if you have any questions, please feel free to contact us and we will provide you with the best solution within 24h, 20mm ball mount adapter connects the phone holder base and mobile phone clip to form complete action camera holder, car GPS holder, scooter phone holder etc, It's perfect Christmas gift for your husband, father, son or friend, bring them the freedom and surprise of freeing their hands.