At 0:11
I'm not sure about the number, He says 280 grit belts? or something else?
I try to understand as well if there is number of belts?
"two 80-grit belts". There are two belts. "80-grit" refers to the coarseness of the abrasive substance.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
"two 80-grit belts".
There are two belts. "80-grit" refers to the coarseness of the abrasive substance. See https://en.wikipedia.org/wiki/Sandpaper#Grit_size_table