Features:1. Adjustable intensity: clockwise to increase the intensity, counterclockwise to decrease the intensity to meet the needs of each year.2. Removable Soft Pad: The final elastic non-slip soft pad is detachable, comfortable to grip, and is very helpful to consolidate finger strength and develop quickly.3. Soft Silica Gel: Soft silica gel, your fingers fit exactly when pressed, and your hand is comfortable.4. Streamlined Design: Fits the shape of your hand and feels comfortable. The fingers can quickly and naturally adjust to their strength, which can fully reduce the damage to the fingers and joints of the wrist.5. Function: This product can exercise finger strength, speed, flexibility and coordination between fingers. Description: The finger training instrument can help you learn guitar and piano, making your fingers more flexible and stronger. Specifications:Model:FA-10P Size: 80*72mm Force: 2.5-6 lbs Telescopic Range: 80-100mmPackage Included:1 * Finger Training DeviceNotes:1. Please allow 0-1 inch error due to manual measurement. Thank you for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object.