Image Item No. Description By  73764  Brick, Modified 2 x 2 x 1 2/3 with Hole for Gear Worm Screw 6L Catalog: Parts: Brick, Modified 1  2628  Brick, Modified 8 x 8 x 2/3 with 1 x 4 Indentations Catalog: Parts: Brick, Modified 60  2629  Brick, Modified 8 x 16 x 2/3 with 1 x 4 Indentations Catalog: Parts: Brick, Modified 120