YONEX Polytour Rev 130 Tennis Reel String

For baseliners with medium-to-fast swing speeds looking for a shaped string (8-sided) that grabs onto the ball for the ultimate spin experience.Specifications:- Material: Polyester (Octagon Monofilament)- Gauge: 16 (1.30mm)- Length: Set (12 m) / Reel (200 m)Technology:SIF:- This new Silicone oil Infused Filament (SIF) technology--monofilament infused with Silicone oil--allows big hitters to experience ultimate spin from intense snapback speeds. Greater snapback produces a powerful spin. SIF Technology with unique pentagonal structure allows the string to move faster than conventional models, increasing spin.