Image Item No. Description  6232  Brick, Modified 2 x 2 with Pin and Axle Hole Catalog: Parts: Brick, Modified  30000  Brick, Modified 2 x 2 with Pins and Axle Hole Catalog: Parts: Brick, Modified  4747b  Brick, Modified 2 x 4 with Coupling, Male - Raised Pin and Curved Wall Catalog: Parts: Brick, Modified  6249  Brick, Modified 2 x 4 with Pins Catalog: Parts: Brick, Modified  6107  Brick, Modified Facet 5 x 5 Catalog: Parts: Brick, Modified  6037  Brick, Modified Octagonal 2 x 2 x 3 1/3 Catalog: Parts: Brick, Modified  6043  Brick, Modified Octagonal 2 x 2 x 3 1/3 Corner 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