Artemik Grinder 1.28mm String

12m / 40' string Need extra spin in your game, while maintaining string durability? The Grinder is for you. Size: 1.28mm Profile: Triangle Twisted Material: Co-polyester + Carbon + Polyolefin + Thermo Foil Cooling Process How does it all work?  The Grinder's is a triangular profile string, that is then twisted to trigger additional power and enhance tension stability. It's the perfect string to generate spin on the ball while maintaining power and durability... ideal for heavy hitters! It's a great equivalent for the traditional RPM Blast from Babolat for all the clay court grinders out there.  Advantages: Power and Spin.