Polyfibre Hexablade

This ethylene string has a characteristic, hexagonal profile which
provides extra grip on the ball's felt, producing optimum spin. A
positive side-effect of this surface structure is that the string
notches quickly, preventing slippage. The Polyfibre Hexablade feels
slightly stiffer than other strings, but thanks to Polyfibre's
Standardized Molecular Distribution Technology (SMD) it is extremely
durable and its high dynamic elasticity makes it particularly easy on
the arm. A string designed especially for topspin players looking for
maximum spin and optimum control for minimum effort.