LEGO Dark Stone Gray Brick 1 x 2 Double Angled with Bumper Holder with Closed Front (2991)

LEGO Dark Stone Gray Brick 1 x 2 Double Angled with Bumper Holder with Closed Front has been used in at least 5 LEGO sets over the past 18 years, since it was first used in 2006. You can also find this part in at least 2 other colors. It has a design ID of 2991 which can usually be found molded into the bottom of the part.