ARCA SWISS Monoball p0 with Panning System and 1/4" thread,

The p0 is a revolutionary tripod head design due to it precision, ease of use and its extraordinarily strong, concentric and uniform locking force. It's called Knobless because the traditional locking knobs have been removed and replaced by an ingenious geared mechanism. The p0 is precise, stylish, light and very strong - a hand of steel in a velvet glove! At first glance... The first thing you notice is that there are no knobs. You can grasp the tripod head from any angle, left or right and block it simply by turning the knurled part. There's no longer any need to fumble for the locking knob! The tripod head is equipped with three locking elements, arranged around the ball like planets. These locking elements apply a uniform force around the ball ensuringa smooth movement of the camera in any axis. As the camera is placed directly on the ball and not on its neck, the movements are as stable as if they were on a rubber ring. The patented aspherical ball also creates a gravitational