Building Bricks Block Base Plates - Variety Pack 5" x 10" Baseplates (3 Pack Blue &3 Pack Green) Tight Fit With All Major Brands 6 packs 5 x 10 inch (16 X 32 studs) (3 pack blue &3 pack green)baseplates ,ABS material 100% Compatible with major brick sets,Not for DUPLO sized blocks Keeps your creations together ,easy to carry and tight fit.Great for group building. Recommended for age 3 and up. The plates are not affiliated with or endorsed in any way by Lego, a registered trademark of Lego Systems