You can do tricep extension with just one dumbbell or a band. ![(1376) Overhead Triceps Extensions - YouTube](https://www.youtube.com/watch?v=Jb5mE3eFCJM&ab_channel=JessieHilgenberg) ![(1376) Seated Triceps Extensions - Banded - YouTube](https://www.youtube.com/watch?v=CRlq6D5UQQI&ab_channel=JessieHilgenberg) You can also use the tricep extension machine ![(1376) Triceps Extension Machine - HASfit Machine Exercises - Machine Exercise - Machine Workouts - YouTube](https://www.youtube.com/watch?v=0yaxe2HMdzA&ab_channel=HASfit)