You can use these foot-shaped climbing holds as footholds or as hand hands. They stand off the wall by 1-3/4", plenty to be used as a slightly incut handhold or as a foothold that can easily be stood on with tennis shoes.
For a fun twist, you might consider setting your gym's introduction to climbing route with our 13-pack of Educational Holds using multiple sets of these "feet" as the footholds.
This set contains one left foot and one right foot.