COVVY Twister Arm Exerciser,Adjustable 22-440lbs Hydraulic Power Exerciser,Shoulder Muscle Training Fitness Equipment,Arm Enhanced Exercise Strengthener for Arm,Biceps,Abdomen,Shoulder (Gray)

【Adjustable Resistance】 COVVY twister arm exerciser can easily adjust the force by turning the resistance button, allowing you to customize your workout intensity according to your fitness level.10-200kg stepless adjustment, gradually increase resistance and strengthen self strength training to help you enhance arm strength.
【Strong and Sturdy Material】 Hydraulic power fitness equipment made of high-density thickened double carbon steel and hydraulic cylinder, which passed multiple endurance tests, it ensures that the structure will not deform or break during long-term training, better than traditional spring power twister bar.
【Fully-Enclosed Hydraulic Cylinder】 The core is a fully sealed hydraulic cylinder, which can maintain a stable force. Simple structure, reliable operation, adjustable resistance and is very safe. Fixed arms angle&motion track when adjust resistance, micro-rebound safer than tra spring ones, offer a stable resistance strength won't weaken over time.
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