Image Item No. Description  30237  Brick, Modified 1 x 2 with Clip (Vertical Grip) (Undetermined Type) Catalog: Parts: Brick, Modified  45403  Brick, Modified 5 x 12 with 1 x 2 Cutouts and 3 Holes on Side Catalog: Parts: Brick, Modified  45403c01 (Inv)  Brick, Modified 5 x 12 with 1 x 2 Cutouts and 3 Holes on Side with 2 Fixed Rotatable Friction Pins (45403 / bb1241) Catalog: Parts: Brick, Modified