GRIPZILLA
Dynamo - Grip Wrist and Forearm Strengthener
The Gripzilla Dynamo is an adjustable wringing trainer for grip, wrist and forearm strength. You twist the two handles in opposite directions, the way you'd wring out a towel. Friction resistance on each handle loads the forearm flexors on one side and the extensors on the other in every rep, across all 20 forearm muscles. Think of it as an adjustable wrist roller with no weights, no rope and no gravity: the resistance comes from two tension knobs, one per handle. Key facts What it trains: grip strength, wrist strength, twisting (torque) strength and forearm endurance.
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