Our machines use 6mm GT2 belt。

If you need a new belt, you can buy it online.

Search the name 6mm GT2 belt in Aliexpress.com or Amazon.com.

for example

https://www.aliexpress.com/item/5m-lot-GT2-6mm-open-timing-belt-width-6mm-GT2-belt-Rubbr-Fiberglass-cut-to-length/32811832945.html