LEGO Blue Brick 2 x 4 has been used in at least 640 LEGO sets over the past 57 years, since it was first used in 1967. You can also find this part in at least 147 other colours. It has a design ID of 3001 which can usually be found molded into the bottom of the part.
LEGO Brick 2 x 4 with Shell Logo (Both Sides) Sticker (3001) Comes In
LEGO Brick 2 x 4 with Popcorn (2 sides) Sticker (3001) Comes In
LEGO PART 3001 Brick 2 x 4 Rebrickable - Build with LEGO
LEGO Brick 4 x 8 x 2.3 Turret Top (6066)
LEGO Dark Azure Brick 2 x 4 (3001) Comes In
LEGO Medium Blue Brick 2 x 4 (3001) Comes In
LEGO- NEW- #3001-MEDIUM BLUE-2 X 4 BRICK-10 PIECES
LEGO White Brick 2 x 4 (3001) Comes In
LEGO Blue Brick 2 x 4 has been used in at least 640 LEGO sets over the past 57 years, since it was first used in 1967. You can also find this part in
LEGO Blue Brick 2 x 4 (3001)