High-quality hand exerciser with spring-loaded finger piston technology
Isolates and strengthens each finger individually for better overall coordination
Improves user control of bats, racquets, clubs, guitars, and other sports equipment
Fits conveniently in your pocket; lets you strengthen fingers anytime, anywhere
Extra-heavy tension strength of 11 pounds per finger for extremely strong hands
DescriptionOnly patented product (ODP from GripMaster) Isolates [...]
