belt help

[twostrokes]

i am new to the minis just was wondering the differences in the belt numbers like 780 787 are these the lenghts or compounds, angles, widths have a 08 apex 90 and was given a pile of belts with it and dont know were to start thanks for any help

[qcitytile]

The numbers your posting are the length of the belt. I start with the 787 I never had luck with any thing shorter.
This is what each of your belt numbers are
787(length) 17(width) 30(angle)