Planet Waves VARIGRIP Hand Exerciser 29 which can happen very quickly

which can happen very quickly with uncoated strings

do you have a kick drum or guitar cabinet that needs miking

It can also be used as a "Y" to split a stereo signal into Left and Right

Most importantly

Planet Waves VARIGRIP Hand Exerciser 29 which can happen very quicklyThe Varigrip's ergonomic design and variable tension provides customized conditioning for individual fingers, the entire hand, wrist, and forearm. The reversible molded grip even uncovers simulated strings to help develop and maintain finger calluses when you are away from your instrument. Features Soft, over molded finger pads for added comfort Individually adjustable tension for each finger allows the user to set the tension from x light to hard