Panasonic AG-7500 Belt Set. 
You can find a video in the product listing images explaining how to change the belts on the machine.
I have found that the most common problem with these fantastic machines is dry or broken belts. These are a tested and reliable replacement.
 
This set includes:-
x1 - Tray Transport Belt
x2 -  Drive Belts
 
Brand new.
Free Postage.