LEGO Dark Stone Gray Connector 2 x 3 with Ball Socket and Smooth Sides and Sharp Edges and Open Axle Holes (89652)

LEGO Dark Stone Gray Connector 2 x 3 with Ball Socket and Smooth Sides and Sharp Edges and Open Axle Holes has been used in at least 11 LEGO sets over the past 15 years, since it was first used in 2009. You can also find this part in at least 10 other colors. It has a design ID of 89652 which can usually be found molded into the bottom of the part.