Wrist trainer for training to improve finger flexibility and strengthen wrist strength. Comfortable to use, easy to operate, and convenient to carry. Promotes blood circulation in the hands and easily improves finger flexibility. Portable 5-finger spring hand grip. - Product Name: Hand Grip Strengtheners - Accessories: Instruction manual, sticker - Color: Black - Function: 5-finger spring hand grip - Uses: Training, exercise - Features: Portable, supports all fingers Thank you for viewing.