Image Item No. Description  47905  Brick, Modified 1 x 1 with Studs on 2 Sides, Opposite Catalog: Parts: Brick, Modified  47855  Brick, Modified 2 x 12 with Peg at each End Catalog: Parts: Brick, Modified  47855  Brick, Modified 2 x 12 with Peg at each End Catalog: Parts: Brick, Modified  47855  Brick, Modified 2 x 12 with Peg at each End Catalog: Parts: Brick, Modified  47116  Brick, Modified 12 x 24 with Peg at Each Corner Catalog: Parts: Brick, Modified  47116  Brick, Modified 12 x 24 with Peg at Each Corner Catalog: Parts: Brick, Modified  47115  Brick, Modified 24 x 24 without 12 x 12 Quarter Circle, with Peg at each Corner Catalog: Parts: Brick, Modified