Wow - so fast! Thanks for those suggestions Barry and Antti -I will check them out!
Hi Alan and Juan, Thanks so much for taking the time to give me these great options and resources - very cool of you both! Juan, that was especially helpful that you mentioned the size of the square hole (1/8") on the other side of the 1/4" hex bit, because this is the information I have been searching for so I can find something compatible. Every time when I saw something online, it only mentioned a "square hole" on one side, but not the exact size, so thanks!I'll check-out the links and options both of you guys sent.