You know industrial hand wheels are very necessary for keeping our society moving. Those small even large wheels simple wheels do a variety of tasks that our feeble fleshy hands would not be able to do. Such jobs include turning valves that are so hot that our flesh would just melt away. Another job is turning valves that our hands are just not strong enough to turn with out help. In my opinion hand wheels are very useful to us even though we do not see them at all.