All-in-one hand exerciser specifically design for many musical instrument also can be used for finger strength exercise in daily life Safely and conveniently build strength endurance and flexibility and coordination provides a complete strength training solution for fingers hands wrists and forearms Individual finger tension is adjustable you can select different tensions for each finger providing all-in-one hand fitness Using silicone material soft design comfortable pressing will not hurt your fingers durable longer using time Extremely portable design you can use it in easily strength your fingers at any time when you want
