Unlike most other ball heads manufactured from die-cast components, the Matthews BH-20 ball head with 6" suction cup is individually CNC machined from solid bars to ensure precise control of all critical dimensions and features. This ball head can support up to 26.4 lb (12 kg). It comes with a precision-machined and well-balanced quick-release plate that allows for quick, secure and positive locking of the camera onto the ball head. The mounting plate can remain permanently attached to the camera to avoid wasting time screwing the camera onto the ball head or screwing the ball head onto the camera. Note: When using the Matthews ball head camera mounting suction cup on a moving vehicle, ensure that the system is well stabilised and supported. Ensure that smooth mounting surfaces are clean and as dust-free as possible to guarantee a firm grip.