Image Item No. Description  bhol02  Brick 2 x 2 without Bottom Tubes Catalog: Parts: Brick  bhol03  Brick 2 x 3 without Bottom Tubes Catalog: Parts: Brick  bhol04  Brick 2 x 4 without Bottom Tubes Catalog: Parts: Brick  crssprt03  Brick 2 x 8 without Bottom Tubes, with Cross Supports Catalog: Parts: Brick  crssprt04  Brick 2 x 10 without Bottom Tubes, with Cross Supports Catalog: Parts: Brick  bhol01  Brick 4 x 4 Corner without Bottom Tubes Catalog: Parts: Brick  702old  Brick 4 x 4 Corner without Cross Supports Catalog: Parts: Brick  700e  Brick 10 x 20 without Bottom Tubes, with '+' Cross Support and 4 Side Supports (early Baseplate) Catalog: Parts: Brick