【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
【Reliable Quality】The structure of the entire arm exerciser is made of high-density carbon steel, sturdy and durable, also with non-slip grips on both sides. Each power twister will undergo multiple tests to ensure stability and durability, and to maximize your safety and product life.
【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!