Double ValhallaThe 2 handed version of the Rolling Key of Valhalla! Great for training for 2 handed key pinch events such as the double mini inch pinch, or to help save time by training 2 hands simultaneously. The allowance for heavier weights and deadlift stance also enables good body strength and balance. Rollers come only in the 1" diameter and is anticipated to be the most commonly used specification for grip competitions. However, special requests can be made.