This is most likely a Chinese replica of Benro B2 ball head, the very well finished in the test and is much cheaper. From 2.8 kg load he was, like all other tested heads to 1mm after.
I use it on a Manfrotto Manfrotto 680B and 055XPROB or a D300 with 16-85mm Lens (1400 grams). In particular, the Arca-Swiss compatible quick release mechanism is much more convenient and safer to use than other 'clamping lever systems'.
In addition, a useful transport bag with cord lock and an adapter plug supplied to 1/4 inch for mounting.