Image Item No. Description By  crssprt02  Brick 1 x 6 without Bottom Tubes, with Cross Supports Catalog: Parts: Brick 145  crssprt01  Brick 1 x 8 without Bottom Tubes, with Cross Supports Catalog: Parts: Brick 93  bhol02  Brick 2 x 2 without Bottom Tubes Catalog: Parts: Brick 19  702  Brick 4 x 4 Corner Catalog: Parts: Brick 21