Wrist curls and wrist extensions are great. Other exercises which also strengthen the wrists & grip: hammer curls with kettlebells (due to the manner in which the weight is held), wrist rotations, and behind the back wrist curls. YT video for the last one as a lot of people don't seem to be familiar with it: https://www.youtube.com/watch?v=xrS1UCC24do
Wrist curls and wrist extensions are great. Other exercises which also strengthen the wrists & grip: hammer curls with kettlebells (due to the manner in which the weight is held), wrist rotations, and behind the back wrist curls. YT video for the last one as a lot of people don't seem to be familiar with it: https://www.youtube.com/watch?v=xrS1UCC24do