Climbing donuts are an interesting alternative that offer a greater range of motion in the exercises you can do: http://www.amazon.com/Grip-Pro-Trainer-Forearm

Climbing donuts are an interesting alternative that offer a greater range of motion in the exercises you can do: http://www.amazon.com/Grip-Pro-Trainer-Forearm-Strength/dp/B000NJHD1W/ http://www.amazon.com/Grip-Pro-Trainer-Forearm-Strength/dp/B... Those powerball/gyroscopic spinners are also interesting for RSI: http://www.amazon.com/NSD-Power-Essential-Gyroscopic-Exerciser/dp/B007GGCLK8/ http://www.amazon.com/NSD-Power-Essential-Gyroscopic-Exercis...