Designed for ergonomic hand exercises.

Applying force between 10 - 40 kg thanks to its adjustable mechanism.

Used in moderate training, easy and practical to use.

It allows you to strengthen the hand and forearm muscles and perform biceps movements with more weight, and to have stronger, more beautiful-looking arms.

It minimizes the calcifications that may be seen on the hands and fingers in later ages.

Product Features Made of quality materials.

Spring and steel components are stainless steel.

The desired hardness can be easily adjusted.

Easy to carry, portable.

Package Includes: 1 Adjustable hand spring. (The product also has different colors.