Fuel injectors

[90AWDTalon]

I just got the 680cc injectors I ordered from www.fullthrottlespeed.com , on the web site they say each injector is flow tested and indivually scribed and hand selected to be with in 1% of each other. There is some scribing on the injectors but if its flow, its coded:
11158/210233
13158/210233
16158/210233
13458/210233
Has anyone bought injectors from them and know what these scribes mean?

 

[90AWDTalon]

Don't know if anyone is curious, but I called Full Throttle Speed today when I got home from work. Turns out I miss understood what they were saying. They don't scribe the flow on the injectors. They give them a serial number when they flow test them and then match the serial numbers up when the sell them as a set of four.