Material: Spring Alloy Steel Size: 16*2.5*4.6cm / 6.24"*0.98"*1.79" Color: As shown 1. High-strength spring design with adjustable grip strength, suitable for hand strength training for different people, effectively strengthening the fingers, palm, and forearm muscles. 2. Unique spherical handle design, ergonomic and comfortable to hold, reduces fatigue after prolonged use, making it ideal for daily exercise and stress relief. 3. Multi-purpose: It can be used as a fitness device to strengthen your hands or as a stress relief toy to relieve anxiety and stress, suitable for use in various settings, including home and office. 4. Sturdy and one lasting construction, made with high-quality springs and non-slip materials, ensures long-term use without deformation or damage, ensuring safety and reliability. 5. Portable and compact, it takes up very little space and is easy to carry, making it suitable for hand exercises and relaxation at home, at the gym, in the office, or outdoors. Package Includes:1pcs hand grip strengthener