Standard word for chopsticks. Often used with counters like 膳 (ぜん) for pairs.
箸を上手に使えますか。
Can you use chopsticks well?
この箸は使いやすい。
These chopsticks are easy to use.
He's good at picking up beans with chopsticks.
My foreign friend is skilled at using chopsticks.
The food was served, but he hasn't started eating yet.