Monofilament tennis string IRON SPIN - protennis-shop.com
NEW Babolat Duralast 16g 1.30mm Tennis String Polyester Monofilament Power Spin | eBay
Amazon.com : HEAD Sonic Pro Tennis Racket String 40' Set - 16 Gauge Monofilament Racquet String, Black : Tennis Racket String : Sports & Outdoors
HEAD Tennis - HEAD Strings Portfolio is engineered to provide different and unique ratios of Power and Control. Learn about the difference between monofilament and multifilament strings, and find the best string
Head Lynx 16/1.30 Tennis String Reel (Blue) | RacquetGuys