LEGO Dark Stone Gray Brick 12 x 12 x 1 with Grooved Corner Supports (30645)

LEGO Dark Stone Gray Brick 12 x 12 x 1 with Grooved Corner Supports has been used in at least 2 LEGO sets over the past 20 years, since it was first used in 2004. You can also find this part in at least 5 other colors. It has a design ID of 30645 which can usually be found molded into the bottom of the part.

• Block
• Channel
• Hollow Stud
• Mod