Is this a LEGO part? It looks very similar to a technic axle connector 2x3 with ball socket
This is a non-LEGO piece since none of the LEGO parts have gaps as seen in second picture.
One thing to note. Actual LEGO elements (depends on the version of Technic, Axle Connector 2 x 3 with Ball Socket) tend to crack right where the gap is on this clone element.