Google results show the fact that Pennsylvania doesn't have specific laws concerning possession of what are called "lock picking tools." https://www.google.com/search?q=lock+picks+pennsylvania
Some states have laws that state the tools are legal and law enforcement must show intent to use them maliciously; some state laws say that possession of such tools is prima facie evidence for illegal activity, and some states - like PA - simply don't have specific laws. Simple possession of the tools can be a different matter than possession and intent to do something with them, under some state codes. Check out http://lockwiki.com/index.php/Legal_issues
PA Code is such that people could be prosecuted for possessing such tools and with an intent to use them. One section is "Manufacture, distribution or possession of master keys for motor vehicles." http://www.legis.state.pa.us/cfdocs/legis/LI/consCheck.cfm?txtType=HTM&ttl=18&div=0&chpt=9
Under that law, probably a screwdriver jammed in an ignition switch could be construed to be a master key. But definitely having and using lock picking tools specifically for trying to open or opening locks of cars and houses not your own.
You can always contact https://www.attorneygeneral.gov and ask about the specific status of lock picking tools, as laws change. Or ask your local free law clinic for information on possible instances of when people might be prosecuted, such as if police find those tools in your vehicle or in your pockets during a traffic stop.
But unless you're dressed like a ninja and sneaking around the neighborhood at night instead of playing with locks in your garage watching YouTube videos about the hobby of lock picking, you should fine.