LEGO Dark Stone Gray Hinge Brick 1 x 2 Locking with 2 Fingers (Vertical End) (30365 / 54671)

LEGO Dark Stone Gray Hinge Brick 1 x 2 Locking with 2 Fingers (Vertical End) has been used in at least 31 LEGO sets over the past 20 years, since it was first used in 2004. You can also find this part in at least 19 other colors. It has the design IDs 30365, 54671 which can usually be found molded into the bottom of the part.