The Coko Base Plate 18x18 stud are an ideal base for use with any of the large COKO educational bricks. Compatible with LEGO DUPLO, COKO Bricks are a great way to turn any construction play into a learning opportunity. Allows you to place and remove COKO bricks easily. Made from durable plastic. The large base plate measures 28.5 W x 28.5cm D and is perfect for literacy and numeracy groups when used with COKO letter and number bricks.