The one I got from NAPA Has (NAPA M-137 USA) on it. That one is the bigger one than most of the screws in the interior. I got the smaller ones on clearance at an Ace hardware store. There #s are 20562 20563 20564 20565. 20563 fits most interior screws. Also, here's a website you can order a set or individual ones online: http://shoptoolsshoptools.com/shopdisplayproducts.asp?id=512&cat=Clutch+Head+Screwdrivers%0D%0A
