The spring of the Joerex JD6072 expander is made of carbon steel and covered with foam rubber at the points of contact with the body. The use of these materials provides the expander with extreme strength and, accordingly, durability.
- Joerex JD6072 hand expander is a sports trainer for strengthening, developing, and maintaining the tone of the complex of muscles of the hand and forearm. With constant use of this simulator, you will certainly get a positive result.
- Material: carbon steel, rubber, nylon.