YONEX Stringing 3-Piece Set ★ 2 Stoppers ★ String Winder This is a set of tools for stringing your own racket without using a stringing machine. While a stringing machine is better for a full string replacement, if only one or two strings break, it's more cost-effective to fix it yourself. Plus, the biggest advantage is being able to fix it immediately! The stoppers show some signs of use, but they are still perfectly usable! However, this is based on personal opinion, and to avoid any issues such as wanting a refund or return due to dirt, please refrain from purchasing if you are overly concerned about the condition. Please understand and accept that this item is stored and inspected by an individual. Thank you for your understanding.