Adjustable Hydraulic Power Twister Arm Exerciser 22-440lbs Home Chest Expander

【Adjustable Resistance】The resistance strength of this power twister can be adjusted by rotating the knob,the range is:22-440lbs,2-20 levels.You don't need to buy new ones when your strength level increases,it applies to any stage of arm strength training enthusiasts.Easily turn the knob left or right,increase or decrease the resistance to meet your needs in different training stages,accompany your entire fitness career.But please choose the intensity that suits you so as to avoid muscle strain

【Hydraulic Pressure Protection】Research shows it is very dangerous to use spring power twister,because its springback is violent,easy to hurt you;the spring in the middle will easily pinch youself;the spring is prone to break after prolonged use.Please throw away those spring power twister,try our hydraulic power twister which is safer and more durable becasue of the patented hydraulic adjustment system principle.There is no danger of the spring breaking,wont rebound and hurt yourself!