Muscle hand training device

The product has five conventional strength specifications: 20KG, 15KG, 10KG, 5KG, and 30KG, which are suitable for people of different ages and needs. Matching different strength can be used as strength training, physical fitness and so on. Detailed parameters Product size: About 41CM * 22CM * 3.5CM Weight: 0.85KG Colour: Black (handle color also is black) Material: shell ABS, NBR (foam), spring steel inner core Why Should You Use This Arm Strength Trainer? Ergonomic Design: The unique 8-shape fits naturally in your palm, giving you a comfortable, secure grip without slipping.Durable & Safe Material: Made with a strong spring steel core wrapped in non-slip rubber for extra friction and safe use every time.Train Anywhere, Anytime: Lightweight and compact — easy to carry to the office, gym, or even when you travel.Perfect for Different Sports: Great for improving wrist and arm strength for office workers, tennis players, golfers, rock climbers, and more.Ideal for Desk Workers