Brick Building Base Plates By SCS - Large 10"x10" Green Baseplates (4 Pack) - Tight Fit with all major brick sets 4 PACK BASE PLATES - 100% Tight Fit with All Major Brick Sets BOTTOM CONNECTION - Underside Connectability so you can connect Bricks from top or bottom GUARANTEED TIGHT FIT - Custom molded for Guaranteed Tight Fit PLAY TABLE - Great baseplates to build play table AFFORDABLE OPTION - An affordable alternative to your brick building collection to expand your options!