The Hab Block Starter contains one of each of the following; LCW1305 8"x8" Single Story Blockhouse, LCW1310 4"x4" Single Story Blockhouse, LCW1315 8"x4" Single Story Blockhouse, LCW1325 8" L Single Story Blockhouse, and LCW1385 Scaffolding Bridge pack (contains 2 bridges).