10-200KG adjustable One-touch easy adjustment of strength, 10-200kg free adjustment. Just rotate one circle to adjust, to meet your needs at different training stages. Design and safety The double spring design makes the spring of the power torquer evenly stressed and will not deform during operation. With the adjustable hydraulic arm strength trainer, you can adjust the resistance to precisely adapt to your strength, so that your muscles will not be hurt by trying too much resistance. Professional micro-rebound, eliminate violent rebound, thoroughly solve safety hazards, achieve harmless, safe micro-rebound, safe fitness. Durable material Strong and durable double-layer steel pipe material. Hydraulic design to ensure that the structure will never deform after long-term training. The core is a fully sealed hydraulic cylinder with simple structure, reliable operation and adjustable resistance. The leak-proof hydraulic cylinder that has passed 100,000 durability tests can provide adjustable and stable resistance, which is far superior to traditional spring strength training bars. Easy to use and store The buckle at the bottom of the handle is easy to store and easy to carry. The humanized back buckle design can be fixed after folding. After finishing your exercise, please turn the adjustment knob to the minimum level and lock the handle with the buckle. The locked strength trainer takes up very little space. (Note: Do not grab the buckle part to prevent the arm machine from falling and hurting your feet) Comfortable to hold Unique golden ratio triangle structure, more stable exercise. Adjust the angle more safely. The opening angle remains unchanged. The exercise stroke also remains unchanged, which is more effective for muscle training. With the adjustable hydraulic arm strength trainer, you can adjust the resistance to perfectly suit your strength so that your muscles will not be hurt by trying excessive resistance.