LEGO QUATRO was a theme in preschool series introduced in 2004 and discontinued after 2006. It was designed for children age 1 to 3. QUATRO bricks, hence the name, are designed to be twice the dimensions of LEGO DUPLO bricks. The name "QUATRO" also signifies that the blocks are quadruple the dimensions of the traditional LEGO System blocks. QUATRO bricks are compatible with DUPLO and System bricks. These pieces were baby-friendly, and were specially designed to endure teething. In addition, they
LEGO minifigures Super Heroes Black Panther
QUATRO, Brickipedia
76921 Audi S1 e-tron quattro, Brickipedia
5356 Medium QUATRO Bucket - Brickipedia, the LEGO Wiki
Bricker - Construction Toy by LEGO 66474 LEGO Chima Super Pack
3837 Monster 4 - Brickipedia, the LEGO Wiki
BAG14 Bag of Bricks, Brickipedia
A History of Lego Duplo – Empire of the Brick
Queen Beast - HEROsector01
▻ LEGO Braille Bricks: The Braille Bricks Kit is finally available for everyone - HOTH BRICKS
Hockey Player 4, Brickipedia
9677 X-wing Starfighter & Yavin 4, Brickipedia
Bricker - Construction Toy by LEGO 9488 ARC Trooper & Commando Droid Battle Pack
City Police Officer Four - Brickipedia, the LEGO Wiki