The Triceps Kickback is primarily working our triceps. Other strongly involved areas are back and core.

Variation 1:
Stand with knees bent, lean over with a straight back, wrists horizontal and the push towards your hips.
Adjust the exercise by standing straight which makes it harder and involves more core and back.
You can also vary in the width of holding the band. This can also make it harder and engage your shoulders as well.

Variation 2:
The same as 1 only with your wrists vertical.
This targets the longer head of the triceps and also engages our latissimus dorsi even more. On the other hand we release some of the pressure to our shoulder.