MIGHT help if you mentioned which drives you're talking about... It's like asking where can I get gas from? Without saying if it's for a vehicle, home, camper, grill, jet, etc...
Also, are you talking about to install on the case or the drive itself??? EITHER way, without saying what you're talking about, it's virtually impossible to tell you.
Oh, and thanking in advance is for lazy people (and losers). Thank WHEN you get info that's useful or of help.