Merach Twister Arm Trainer, 22-440lb Hydraulic Power, Adjustable Home Chest Expander, Shoulder Muscle Training Fitness Equipment, Arm Enhanced Exercise Strengthener

Upgraded Arm Trainer: Increase protective housing at the hydraulic cylinder and strength gauge, which can cushion the accidental impact, protect the hydraulic cylinder and strength gauge from mechanical damage, avoid oil leakage and reduce the risk of pinch injuries
Durable Material: Forearm strengthener is made of double-layer high-density carbon steel, which is not easy to deform and break. The core component is a fully sealed hydraulic cylinder, providing constant and stable resistance strength throughout your workout
Adjustable Resistance: This chest exercise machine features 2-20 resistance levels, the resistance adjustment range is set to 22-440 pounds, just turn the knob, you can choose the level that suits you best, perfect for men, women, newbies or veterans who are just starting to use the exercise equipment