1. U-shaped double fine steel spring, rebound smoothly 2. Foam wrapping, dense and durable, does not clamp hair or flesh 3. Three levels of strength, you can adjust according to your needs 4. Thickened and thickened steel pipe, strong and not easy to break 5. Material: steel, foam 6. Gear: three gears (30/40/50kg) 7. Size: about 66.5 x 17.5cm 8. This product is manually measured, and there may be 0.1-0.2 mm and 0.1-0.2 g errors in length and weight; due to display and light problems, there may be a slight color difference. Please refer to the actual product! 9. Note: Only arm strength equipment is shipped, no other items!
