MAYAMI HEPTA POWER is a truly agreeable and comfortable monofilament polyester string with a heptagonal profile.
The principle focal points are its seven corners that truly bites that ball for maximum RPM speed producing clean and pure power in you game.
Stringingpedia.com lab testing (1,24mm) : Control : 100/100 points; Spin : 90/100 points; Tension Stability : 85/100 points
Construction: heptagonal shaped (7-sided)
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