Original adjustable hand gripper, GD Grip, hand exerciser, power gripper.
You can adjust the strength tension from 18lb to 55lb (8kg~ 25kg) by turning the black rotary knob.
This is an excellent training tool that strengthens your hands, wrist and forearm.
All products of GD GRIP are protected by PATENT issued by the US government. (NO. US 6,881,177 B2)

Technical Details

Product Details

Package Dimensions
Width : 5.7 inch
Height : 1 inch
Length : 8.6 inch

Shipping Weight: 8.8 ounce (View shipping rates and policies)

ASIN : B008NQ9U6I