Features: Make of TPR, PP, steel, comfortable and slip resistant. Our grip enhancers will make your movements more comfortable. Our hand extruders are equipped with electronic counting functions, which record your exercise time everytimes. Adjustable resistance: 10-100kg resistance can easily adjusted as needed. It can matching with your various grip training to solve your hand, finger, and forearm problems. Grip strength enhancers is very suitable for increasing the strength, strength, and speed of the wrist, fingers, and forearm. Our grip strength training device is super portable and can let you exercise at homes, in the car, in the offices. Specifications: Component: TPR, PP, steel Length: 16cm/6.3inch Color: Black/Green/Gray Package Includes: 1pc Hand Grip Strengthener note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.