I got these from a friend and have no idea what they are.

Hello, Are the ends away from the T-handle sharp? I am thinking a graduated set of cutters for leather or gasket material. Regards, Lou

yes. it looks like they are. thanks for the quick reply

Used to bore holes in corks and rubber stoppers in labs. Google "Cork Borer Sets" for more.

thanks for all the help. I never would have guessed that