Give John Williams a call at Klingspor - 1-800-645-5555
They carry all the belts you will need. He can help you sort out what would be best. Tell him what type of setup you have ,and what you are going to grind.
Some suggestions for types and weights that should work on your grinder:
CS411 Y weight, from 24-180 grit
LS309 J weight from 80-500 grit
CS310 XF weight from 40-240 grit
CS310 X weight from 24-600 grit
Klingspor gives a good discount for quantity, starting at a fairly small order (I order by the hundred). If you wanted a starter order, try something like this, then reorder the belts you like the best and use the most in appropriate numbers:
CS411 Y 50,100,180 - two each
LS309 J 100,220,400 - three each
CS310 XF 100,240 - two each
CS310 X 180,320,600 - three each
Stacy