I work on my Bike Friday and sometimes I have a really hard time removing parts because I'm old and weak (not really, but I am a female and a senior so I just don't have the arm strength all the time). Particularly if the bike has been worked on at a shop - they torque things down so tight I can't do my own maintenance.

Is there a tool extension or specific tools (hex, wrench) that are affordable and would provide the leverage I need? My standard hex keys and wrenches just don't cut it all the time. I've got a bikehand pro stand that works quite well but I hate asking my adult son to come over and loosen a bolt =).