SCS Direct Building Bricks - 10 Pounds "Big Box of Bricks" Bulk Blocks - Tight Fit and Compatible with All Major Blocks Building Bricks - 5 Pounds "Big Box of Bricks" Bulk Blocks - Tight Fit and Compatible with All Major Blocks From the Big Bag of Bricks line, here comes 10 POUNDS of building bricks for your enjoyment Compatible with Lego* and all major building block manufacturers A bunch of bricks Cheap - with LESS filler than all other sets