Yonex BG66 Force is a 0.66mm badminton string designed to deliver a firm, powerful response with strong repulsion off the shuttle. Its gauge sits in the thinner-to-mid range, giving players good feel and spin potential while still offering more durability than the very thinnest tournament strings. It's a well-rounded option for players who want a punchy, attacking feel without needing to restring after every few sessions. Each order includes a 10m set / reel, enough for one full stringing job, and it's available in multiple colors.