Image Item No. Description  44865  Brick, Modified 1 x 2 with Pin and Bottom Stud Holder Catalog: Parts: Brick, Modified  14520  Brick, Modified 2 x 4 - 1 x 4 with 2 Recessed Studs and Thin Side Arches Catalog: Parts: Brick, Modified  71772  Brick, Modified 8 x 16 x 2/3 with 1 x 4 and 2 x 4 Indentations Catalog: Parts: Brick, Modified