Set of 2 Large DUPLO-Compatible (big blocks) Building Plates: 20"X20" Area Total- With Step-by-Step Instructions on How to Create a Play Table Using These Plates by Creative QT Not for small lego bricks -- these fit duplo blocks perfectly but the studs are too big for the small stud lego blocks. Includes (2) extra large baseplates 10"x20" each. Combined they can make a 20"x20" surface. Also included: (1) set of instructions on how to make a play table using these plates. Additional packs can be purchased to cover any surface. Plates can be cut to fit any space. Step-by-step instructions included on how use these plates to create a play table. 100% compatible with lego-duplo style blocks. We guarantee a perfect fit. This product is not associated or endorsed by lego, lego is a trademark of the lego group of companies.