☆ PowerKnee Spring-loaded Knee Supporter Set of 2 Includes hex wrench and springs. ☆ Knee Support ・ When climbing stairs ・ People who need to do frequent farming work ・ When lifting heavy objects ・ Long hours of driving or long hours of work ・ Standing for long periods ・ Running, climbing, cycling, and other sports English description on the box ※ Translated using a translation function ※ Box not included. ・ Spring Adjustment Method 1. Loosen and remove the screw on one side 2. Pull out the screw on the other side 3. Stretch the two motherboards outwards and return the spring to its original position. ※ Use 2 or 3 springs depending on your physical strength. 4. As shown in the figure, the spring is fixed to the motherboard ※ The spring is inside the mainboard of the device as shown in the figure. As stated in the instructions. ※ Translated using a translation function ※ Used a few times and stored at home. Please understand that there may be scratches, scuffs, and dirt. ※ Please refrain from purchasing if you are concerned about the condition due to simple packaging. Anonymous shipping. ☆ Thank you. ※ No photo copying Please do not copy the product description. - Type: Leg Supporter - Adjustment Function: Spring adjustment function - Accessories: Hex wrench and springs