SEATED BARBELL WRIST CURL
Kneel with your forearms resting on a bench, palms facing upwards, holding a barbell just in front of the bench. Open your fingers so the bar rolls forwards and your wrists fully extend until you feel a deep stretch in your forearms. Close your grip and flex the wrists to curl the bar up and towards you while you squeeze your forearms. Superset this move with 7B.