【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,won’t rebound and hurt yourself!
【Totally-enclosed Hydraulic Cylinder】Unlike other spring based exercisers,our power twister adopts totally-enclosed hydraulic cylinder which offers you stable resistance strength,will not weaken over time!With unique safe hydraulic adjustment system principle,even if you change the resistance,the opening angle of the arms doesn’t change,the motion track aslo doesn’t change,so you don’t need to change arm movements,and what’s more,you can fully open your arm even you reduce the resistance!
【Double Carbon Steel】Our hydraulic arm exerciser is made of high-density double carbon steel,engineering plastics and hydraulic cylinder,which passed 100000 endurance tests,won’t easily be deformed and broken!Ergonomically designed PU handle provides you with a more comfortable grip.Special anti-slip texture design protects against accidental falling off,not only offes you with a safer fitness experience,but also offers good wear resistance for maximum longevity!
【Golden Ratio Triangle Structure】The unique golden ratio triangle structure with 10 reinforcement rivets maks the arm trainer more load-bearing capacity,always keep it in a stable state,ensure the safety for using.So whether you are a novice or a veteran,it will be very suitable for you.Perfect for exercising your wrists,arms,shoulders,chest and back at the same time,developing your grip,building strength on your fingers,wrists,and increasing the muscle strength of the upper body