This part has bottom stud holder that may have symmetric (compare to part 11153) or asymmetric (compare to part 61678) 'teeth'.
Note that the vertical position of holes in Technic bricks does not match the position of side studs of System bricks. Refer to this presentation for details.
Click on a colored part below to see the Sets and MOCs that use part 32000 Technic Brick 1 x 2 [2 Holes] in that color. You can find an overview of all LEGO Colors here.