Koolertron - Pendulum Kit Gimbal Head BK-45 For heavy screw Lens Reflex Camera DSLR Camera (Electronics)
Personally and at that price I found this excellent and beautiful manufacture ball, it is not at all too hard pendulum, in short it's perfect value PRICE !!! Used with a monopod and a Nikon D7100 coupled with Tamron 150 / 600mm