This is tennis string from the brand Spin Japan. It's offered at a low price, so it's recommended for those who aren't too particular about their string! It's a set of multi-filament and polyester strings. There's approximately enough multi-filament string for 5-6 restrings, and polyester string for 3-4 restrings, at least that much. Thank you. ↓ Product Description: 【High-Quality Tennis String】 SP.IN's CHAMPION series is a high-quality tennis string that combines durability and playability. 【Model Features】 - CHAMPION-EM: Gauge 1.30mm, Length 200m - CHAMPION-POLY-GOLD: Gauge 1.20mm, Length 200m Each has different characteristics, allowing players to choose according to their needs. 【Uses】 As tennis string for competitive players, it's an ideal choice for maximizing performance. - Brand: SP.IN - Model Name: CHAMPION-EM - Gauge: 1.30mm - Length: 200m - Brand: SP.IN - Model Name: CHAMPION-POLY-GOLD - Gauge: 1.20mm - Length: 200m Thank you for viewing.