Image Item No. Description  2453a  Brick 1 x 1 x 5 - Hollow Stud Catalog: Parts: Brick  3245b  Brick 1 x 2 x 2 with Inside Axle Holder Catalog: Parts: Brick  3755  Brick 1 x 3 x 5 Catalog: Parts: Brick  3066  Brick 1 x 4 without Bottom Tubes Catalog: Parts: Brick  3067  Brick 1 x 6 without Bottom Tubes Catalog: Parts: Brick  3003old  Brick 2 x 2 without Inside Supports Catalog: Parts: Brick  30144  Brick 2 x 4 x 3 Catalog: Parts: Brick  2356  Brick 4 x 6 Catalog: Parts: Brick