Image Item No. Description  6249  Brick, Modified 2 x 4 with Pins Catalog: Parts: Brick, Modified  6042  Brick, Modified Octagonal 2 x 2 x 3 1/3 with Side Studs Catalog: Parts: Brick, Modified  6042  Brick, Modified Octagonal 2 x 2 x 3 1/3 with Side Studs Catalog: Parts: Brick, Modified  6032  Brick, Modified Octagonal 2 x 3 x 1 2/3 Sloped Catalog: Parts: Brick, Modified  6032  Brick, Modified Octagonal 2 x 3 x 1 2/3 Sloped Catalog: Parts: Brick, Modified