Can anyone tell me if the uppercase tappits are sold anywhere in a size that's larger than the ones that are sold on Global Sugar Art (I think those are 5/8 inch), Thanks.

I have this set. Measuring the letter M (uppercase) it is over 1-1/4" long. They are the biggest ones I have right now, the other font is probably what you have also, same size.

BTW, I got these on ebay. Less than $5 for the whole set, free shipping.