Features: This wrist strengthener is made from heavy duty carbon steel springs and thickened foam stabilization pads for extra comfort and cushioning. Portable and Lightweight: The compact size makes it easy to carry around, go to the gym, the office or use at home. For Beginners and Physical Therapy: This wrist exerciser is designed to improve wrist, hand and forearm strength, power and speed. for Ideal for physiotherapy, sports beginners, tennis players, women, children and others who need to increase muscle strength. Embedded screw cover, the screws are invisible, safe and beautiful; the strength adjustment sliding sleeve can slide up and down to adjust the strength. Specifications: Material: PP+carbon steel Size: Approx. 15x3.5x26.5cm/5.90x1.38x10.43inch Note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Wrist Strengthener