Spring Load
This technology allows the molecular chains to contract repeatedly, resulting in minimal tension loss and, above all, greater stability of the string's properties.
Arm Friendly®
String Project Hexa Pro
Designed to support the most complex spin.
String Project Hexa Pro is a hexagonal-profile co-poly monofilament tennis string (Soft Polyester + High-Density Polyester HDC), treated with Alpha-olefins. The hexagonal shape is specifically designed to "grab" the ball, amplifying snap-back and maximising the most complex spin. Arm Friendly® certified with 8/10 comfort.
8/10
Comfort
9.5/10
Spin
8/10
Power
Technical Specifications and On-Court Ratings
Surgical Control and Extreme Spin
String Project Hexa Pro offers top-of-the-category spin (9.5/10), thanks to its hexagonal profile that grabs the ball and amplifies snap-back. Control (9/10) is its main strength: every shot is directed with surgical precision. Power (8/10) is well calibrated, enough to drive effectively without sacrificing precision.
Power8/10
Comfort8/10
Control9/10
Resilience8/10
Spin9.5/10
Tension8/10
Ratings measured in the laboratory by Pro-t-one (Eng. G. Medri), as are the technical specifications.
The Choice for the Spin Specialist
The co-poly composition (Soft Polyester + High-Density Polyester HDC), treated with Alpha-olefins, gives Hexa Pro controlled stiffness and exceptional mechanical durability. The hexagonal profile is not just aesthetic: every edge helps grip the ball, creating a superior grip effect compared to traditional round profiles.
Technical Data Sheet
- Cross-section
- Hexagonal
- Available gauges
- 1,20 mm (17) · 1,25 mm (16) · 1,30 mm (15L)
- Dynamic stiffness
- 250 g/mm
- Tension range
- 17 / 22 Kg
Laboratory test report · Pro-t-one (Eng. G. Medri)
Advanced Technology and Composition
The distinctive feature of String Project Hexa Pro lies in the combination of two hallmark elements: the hexagonal profile and the co-poly composition (Soft Polyester + High-Density Polyester HDC). High-Density Polyester provides structural stiffness and durability, while Soft Polyester ensures the softness needed for Arm Friendly® certification. The Alpha-olefin treatment completes the profile, adding elasticity and protection against wear.
The manufacturing processes
Pre-Stretch
Thanks to the "pre-stretch" of the core, the entire string minimises tension loss while at the same time allowing a lower stringing tension.
Double Heating
The "heat treatments" remove internal stresses and even out any irregularities in the string. They also make the strings more flexible and elastic.
Liquid Wax
The string is finished with a layer of wax. This treatment significantly extends its lifespan by reducing wear and making stringing easier.
Low Friction
Reducing the string's friction delivers: reduced string movement, greater spin potential thanks to improved snap-back, and a longer lifespan.
Precision and Complex Spin on Court
On court, Hexa Pro stands out for its ability to support the most complex spin. The hexagonal profile grabs the ball with superior grip, letting you impart effects that would be harder to achieve with a round-profile string. Control is the real protagonist: every shot is directed with confidence, enabling precise spin variations and angles.
Surgical Control
Hexa Pro offers control (9/10) among the best in the range. The hexagonal profile and controlled stiffness let you direct every shot with confidence, ideal for players who build the point with precision.
- Exceptional directionality
- Precise angles
- Controlled spin variations
- Solid, communicative feel
Extreme Spin and Rotation
With 9.5/10 spin, Hexa Pro is among the most effective strings for generating rotation. The hexagonal profile grips the ball and amplifies snap-back, producing heavy shots with curved, dipping trajectories.
- Top-of-category 9.5/10 spin
- Hexagonal profile for ball grip
- Amplified snap-back
- Heavy topspin and kick serve
What the Experts Say
Independent reviews published by testers and specialist outlets.
Who It's For
Spin-specialist competitors
Those who base their game on aggressive rotation and want a string that amplifies topspin and spin variations, thanks to the hexagonal profile.
Control-oriented players
Those who build the point with precision and need a string that responds faithfully to their intentions, offering directionality and precise angles.
Those seeking durability without compromise
Those who want a string that keeps its properties over time (8/10 tension maintenance, 8/10 resilience) without sacrificing spin and control.
Ready to Dominate with the Precision of the Hexagon?
Choose the format that best suits your needs. Free shipping from €50.
200 m Reel
~17 stringings
-
~€6.41 per stringing
- Free shipping
- 1 Dampener
- 2x Dry Overgrip pack
Gauge:
Pack of 6 Sets
6 stringings
-
~€8.98 per stringing
- Free shipping
- 1 Dampener
- 2x Dry Overgrip pack
Gauge:
Pack of 3 Sets
3 stringings
-
~€9.97 per stringing
- Free shipping
- 1 Dampener
- 2x Dry Overgrip pack
Gauge:
Single Set
1 stringing
-
- Free shipping
- 1 Dampener
- 2x Dry Overgrip pack
Gauge:
Frequently Asked Questions (FAQ) about String Project Hexa Pro
What is String Project Hexa Pro?
String Project Hexa Pro is a hexagonal-profile monofilament tennis string, made of co-poly (Soft Polyester + High-Density Polyester HDC) treated with Alpha-olefins. It is designed to maximise spin (9.5/10) and control (9/10) with Arm Friendly® comfort of 8/10.
Why is the hexagonal profile better for spin?
The hexagonal profile has six edges that "grip" the ball on impact, creating superior grip compared to round profiles. This amplifies snap-back (the string's return to position), generating more intense rotation and more curved trajectories.
At what tension should String Project Hexa Pro be strung?
The recommended tension range is between 17 and 22 kg. Lower tensions favour power and comfort, while higher tensions (21-22 kg) maximise control and directional precision.
Which gauges is String Project Hexa Pro available in?
Hexa Pro is available in three gauges: 1.20 mm (17) for maximum spin and sensitivity, 1.25 mm (16) for the best balance, and 1.30 mm (15L) for greater control and durability.
Is String Project Hexa Pro suitable for players with arm problems?
Yes, Hexa Pro is Arm Friendly® certified with 8/10 comfort. Despite its hexagonal profile and performance orientation, its co-poly composition with Soft Polyester and heat treatments ensure good vibration absorption.
What is the difference between String Project Hexa Pro and String Project Rocket?
Hexa Pro has a hexagonal profile and is oriented towards control (9/10) and technical spin (9.5/10), ideal for those who build the point with precision. Rocket has a round profile and is more oriented towards power (8/10) with extreme spin (10/10), ideal for an explosive, aggressive game. Hexa Pro has greater stiffness (250 vs 225 g/mm) and superior tension maintenance (8/10 vs 7/10).