Grey Plastic Brick Building Base Plate, Large 15x7.5 inches Baseplate LEGO Compatible By Brand FUN FOR LIFE Lego-Compatible Brick Building Base 10'' x 10'' Grey Baseplate The baseplate is 48 dots x 24 dots Compatible with LEGO, Tyco, PixelBlocks, Mega Blocks Add another useful piece to your LEGO collection with this Baseplate