All Isospeed strings

Pyramid is a monofilament with triangolar shape and composition based on copolyester. The average static stiffness is 0.55 kg/mm.

Axon is a monofilament with round shape and composition based on copolyester. The average static stiffness is 0.75 kg/mm.

Elasticity

Axon is a monofilament with round shape and composition based on copolyester. The average static stiffness is 0.75 kg/mm.

Elasticity

Second Service is a monofilament with round shape and composition based on copolyester. The average static stiffness is 1.3 kg/mm.

Spin Control Stability Tension holding