The Dumbbell Standing Drag Curl (version 2) sets up as a curl variation using a dumbbell, performed standing. This curl variation is set up to minimize swing, so the biceps does the lifting instead of momentum. Because the range is fixed, it's an easy way to add volume without extra fatigue elsewhere.
Log your dumbbell standing drag curl (version 2) sets in 1RM.fit and watch your estimated 1RM update automatically as you get stronger.