Arm Twist Exerciser ThreeLevel Resistance Adjustment for Scientifically Progressive Training The torsion arm trainer offers 30 kg, 40 kg, and 50 kg adjustable resistance. It meets the needs of users from beginners to advanced trainees. The progressive load design helps muscles continuously push beyond current limits, enabling targeted strengthening of the chest, arms, and shoulders. UShaped DualSpring Structure for Durability and Safety Constructed with thickened strength spring steel for powerful rebound and fatigue resistance. Antipinch protective sleeves and reinforced rivets provide stable, slipproof workouts, reducing the risk of injuries and ensuring longer durability. Versatile FullBody Training with One Machine By simply adjusting your grip, you can engage your chest, deltoids, biceps, and core muscles. This arm twist trainer enables professionallevel upperbody sculpting at home. Ergonomic Design for Comfort The handles feature a fully wrapped nonslip foam and soft leather duallayer design, effectively reducing palm friction and pressure during intensity workouts for lasting comfort. Use scenarios Athome upper body circuit: vary grips and resistance levels to train chest, shoulders, arms, and core in a single routine. Quick warmup or mobility drill before strength workouts, in 5–10 minutes. Compact fullbody training accessory for small home gyms, replacing multiple singlepurpose devices.