Anti-slip anti-shock : The TPU overmolded M6 ball head with ergonomic design, perfectly fit the dual socket arms, connection is tight and not easy to loosen, ball head base soft elasticity effectively relieves the huge impact of phone holder during riding, high speed even on potholes, the ball head connecting part is 360° rotatable, free to adjust the cell phone holder horizontal or vertical direction, enjoy the ultra-stable and perfect riding view. | Compatible with RAM Mount: 1 inch ball head adapter with M6*1.0 studs for RAM Mounts B size dual socket arm and motorcycle bike phone mount, support to connect any cell phone mount accessory with 1 inch ball head mounting pattern, 1 inch ball base is suitable for rearview mirrors of diameter M6 motorcycles, electric vehicles, ATVs | Installation dimensions: The M6 ball head is composed of B type 1 inch TPU ball and M6*1.0 threaded post, ball head diameter is 25mm, M6*1.0 externally threaded steel posts connects to any standard female thread on digital cameras, camcorders and other devices, the threaded holes must contain the following dimensions to install this motorcycle phone mount base: M6*1.0 spacing. | Long service life: 1 inch ball mount with M6*1.0 thread main body is made of stainless steel, made of CNC precision machining, solid stainless steel ball head is covered with high-quality anti-slip rubber, provides good protection for the ball head, can withstand greater weight and pressure, it's a good choice for kayak phone holder, scooter phone holder, stroller cell phone holder and other cell phone mount base for long term use. | Quality service: The 1 inch ball head base lifetime warranty, if you have any questions, please feel free to contact us and we will provide you with the best solution within 24 hours. Motorcycle phone holder base connected double socket arm and mobile phone clip to form complete riding phone mount set, which can be given as a Christmas gift to cycling enthusiasts or family members, bringing them the surprise and fun of riding.