ARM STRENGTH POWER Arm Training Expander This is a hydraulic arm bar. The load can be changed with a dial. Adjustable from 0-20 Arm bar muscle training expander pectoral muscle training equipment hydraulic safety thick double steel pipe arm wrestling equipment muscle training goods supplements grip strength gripper pectoral muscle abdominal muscles biceps brachii latissimus dorsi muscle training for home beginners professionals Please refrain from purchasing if you are concerned about minor scratches or stains as this is a used item. * To prevent trouble, we do not accept returns or exchanges after purchase. We cannot provide a guarantee after shipping, so please purchase with your understanding. Muscle training arm bar dumbbell home training diet Under Armour Golds Gym