The cable straight-bar push-down is a popular gym exercise for targeting the triceps. It is usually performed for moderate to high reps, such as 8-12 reps or more per set, as part of an upper-body or arm-focused workout.
Benefits
High level of triceps activation and pump, particularly in lateral head
Can be done heavier early in a triceps workout or for higher reps as a burnout
Can dial in focus on long head of triceps by leaning forward slightly during the movement