Tennis players looking for more power and comfort, this Head Velocity string reel is seriously impressive stuff! The 17 gauge (1.25mm) multifilament construction delivers that perfect blend of power and control that tournament and club players appreciate. What makes it special is the multifilament core surrounded by thicker filaments - this design enhances energy efficiency for more power without sacrificing durability. The low friction coating is genius - it allows the strings to re-align after each shot, which means better spin potential and more consistent performance. The black color looks sharp on any racket, and the 660 foot reel (200 meters) gives you plenty of string for multiple rackets or future restringing needs. The composition of nylon core with polyurethane wraps creates that lively feel that's both comfortable and responsive. Whether you're a competitive player looking for that extra edge or a recreational player wanting more comfort and power, this string delivers professional-level performance. The durability is impressive for a multifilament string - it maintains its playing characteristics longer than many competitors. If you're tired of stiff strings that cause arm discomfort or lack the power you need for aggressive play, this Velocity Power string offers that perfect middle ground. The quality is what you'd expect from Head - consistent, reliable, and designed with player feedback in mind. Whether you string your own rackets or have a pro handle it, this reel provides excellent value and performance that will enhance your game from the first hit.