I am selling two Hi-Qua badminton flying clamps, stringing tools. Even with high tensions of 30 pounds or more, the string will not slip and will not be damaged. You can string with confidence. Compared to other companies' clamps, Hi-Qua clamps have a wider width and a larger area for gripping the string, so the possibility of the string slipping and being damaged is lower. The handle is also longer and can be easily operated with a light grip. I think the Hi-Qua clamp is easier to use. This is the lowest price. Please comment other than price reduction requests. If you have any questions, please feel free to comment.