All Yonex strings

Poly Tour Strike is a monofilament with round shape and composition based on polyester. The avarege static stiffness is 0.92 kg/mm.

Spin

Poly Tour Pro is a monofilament with round shape and composition based on copolyester. The avarege static stiffness is 1.05 kg/mm.

Spin Control

Poly Tour Fire is a monofilament with round shape and composition based on copolyester. The avarege static stiffness is 0.8 kg/mm.

Poly Tour Air is a monofilament with round shape and composition based on copolyester. The avarege static stiffness is 0.72 kg/mm.

Resilience peak Spin

Poly Tour Pro Blue is a monofilament with round shape and composition based on copolyester. The avarege static stiffness is 1.05 kg/mm.

Spin Control

Poly Tour Pro is a monofilament with round shape and composition based on copolyester. The avarege static stiffness is 0.9 kg/mm.

Poly Tour Tough is a monofilament with round shape and composition based on copolyester. The avarege static stiffness is 0.77 kg/mm.

Poly Tour Spin is a monofilament with pentagonal shape and composition based on polyester. The avarege static stiffness is 1.08 kg/mm.

Control

Rexis is a multifilament/synthetic with round shape and composition based on nylon/polyamide. The avarege static stiffness is 0.6 kg/mm.

Tension holding

Poly Tour Drive is a monofilament with octagonal shape and composition based on copolyester. The avarege static stiffness is 0.6 kg/mm.