0.69mm badminton string combining high durability and high power. - Brand: GOSEN - Model Name: R4XINSPIRE - Gauge: 0.69mm - Durability: High Durability - Power: High Power - Soft Feel: Soft Feeling - Spin: Spin Characteristics - Recommended Tension: 23-28LB Thank you for viewing. I purchased this but did not use it, and it has been stored at home. The outer box is not in good condition, but the string itself is relatively clean. If you have any questions, please ask in the comments before purchasing. Returns and harsh complaints are not accepted after purchase. Please refrain from purchasing if you are concerned about minor details or are looking for something in new condition.