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Cannon PowerWorks developed The Bumper with recommendations from a spring manufacturer
Official Strap
If you've been lifting or training for your sport for some time and want to build effective sport-specific grip strength
*Photographed gripper not included
The Bumper 179 Cannon PowerWorks developed The BumperHave you ever wished you could bump up the resistance on almost any gripper? Cannon PowerWorks developed The Bumper with recommendations from a spring manufacturer. Used properly, it will safely add 1 to 7 pounds of resistance to almost any gripper. The added resistance comes from soft, natural rubber, which will not damage the gripper spring. Our extensive testing has proven the durable rubber will last for thousands of reps. This innovative and
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