In addition to the dumbbell hammer curl you could also do neutral grip barbell curls if you re lucky enough to have access to one of those old school bars with the vertical handles.
Neutral grip barbell curl.
Hold a set of dumbbells with a neutral grip so your palms are facing each other.
Instead of your palms facing toward you or away from you they re turned in so they re facing one another.
Curl the dumbbells while keeping your palms facing each other.
Likewise the rope hammer curl is a great option.
1 stand with posture and barbell in front of you and a grip closer than shoulder width 2.
A study published in the american journal of occupational therapy tested participants grip strength using a neutral pronated or supinated grip.
A neutral forearm position provided a stronger grip than a pronated or palm down position.
Most barbell triceps exercises are performed with a pronated or overhand grip.