The Roto-Bar allows you to use heavier weights and create stronger contractions as you are able to pronate your hand at the end.
How to do:
1. Using any of a variety of different tricep extension machines.
2. Pull the weight until your elbows are tight against your rib cage.
3. Although tricep work is normally done slowly, this exercise may be done at a faster pace. Sometimes increasing speed in a controlled manner benefits development in the mid-range movements.