Who says you can’t train biceps in isolation with kettlebells!?
The Goblet Bicep Curl acts much in the same as a hammer curl with dumbbells. We’re not really sure what a dumbbell is, but we heard about them at one point in time and apparently they can also be used to get in shape???
Pick up a kettlebell, grab it by the horns, and curl that sucker until your biceps light up.
As always, start light, do it right, and progress from there.