The A-Z Bib Transponder compares to the Transponders on Roll, but they come in rolls of 1000 pcs and are programmed with a chip code like G-842. In RACE RESULT 14 you will need a Chip File to use these transponders.
The main advantage of this product is that you can buy large amounts of transponders (for a lower price) and decide later on for which bib numbers the transponders will be used.
The rolls have a random letter, A to Z. If you order several rolls they will come with different letter codes.