DOBEN Professioinal Power Twister - Flexi Rod - Heavy Duty Spring Chest Expander for Shoulder, Arms and Chest Exercises, Upper Body Training, Forearm Exerciser, Arm Trainer Device

• Tension size: 20kg, 30kg, 40kg, 50kg, 60kg, 5 size available for you choose, DOBEN original brand
• Materials: Premium quality carbon steel springs and anti-slip ABS plastic handle
• Easy to carry, convenient to exercise in office, school, home, travel,etc
• Flexi rods are great for arm, shoulder and chest exercises, perfect for building strength in the upper body
• Warm Prompt: You need to choose the dimension according to your Physical condition / muscle level, we can guarantee the item quality for you, but cannot guarantee everyone is Stallone, Schwarzenegger, Hulk.

DOBEN Professional spring bar for chest and shoulder training, 20 kg, 30 kg, 40 kg, 50 kg, 60 kg, power spring, arm equipment. Suitable for professional use at home. Spring thickness: 5 mm (20 kg) --- Beginners / Children / Women 6 mm (30 kg) --- Intermediate / Most Adult. 6.5 mm (40 kg): training of frequent users / sporty men. 7mm (50kg) --- Ideal for athletes. 7.5 mm (60 kg) --- Expert / Stallone / Schwarzenegger / Hulk. Equipped with nylon safety loops Optimal training device for daily training. You can use arms, chest, shoulders and abs simultaneously through dynamic movements. Note: Please use it with seat belts. With fitness gloves, it is better. The child must be under adult supervision to use it. Warm your body before training with training, it is very important to avoid training injuries. 100% quality guarantee, any quality problem, contact us, we will help you solve it immediately. Tip: you need to choose the size according to your fitness/muscle level, this is very important. We can guarantee the quality of the item for each of you, but we cannot guarantee that you are all Stallone, Schwarzenegger, Hulk. Package includes: 1 x Soft Dumbbell