Resistance Trainer Pro Edition, Replace up to 35lb of free weights in your palm

Resistance Trainer Pro Edition, Replace up to 35lb of free weights in your palm. Includes starter string. Tone your wrist forearms and shoulders, strengthen arm, wrist, hand & grip, increases your dexterity and coordination, ads the prevention of hand and shoulder injury rehabilitation. Has been opened to check item was in working condition, works exactly as it should.