Spring Load
It allows the molecular chains to contract repeatedly, with minimal tension loss and greater stability of properties over time.
Arm Friendly®
String Project Hexa Pro
Solid control, complex spin.
String Project Hexa Pro is a hexagonal-profile co-polyester monofilament tennis string (Soft Polyester + High-Density Polyester HDC), treated with Alpha-olefins. Solid on impact, it combines control and spin: the hexagonal shape is designed to "grab" the ball and, together with snap-back, generates the most complex spin. Arm Friendly®, with 8/10 comfort.
8/10
Comfort
9.5/10
Spin
8/10
Power
Technical Specifications and On-Court Ratings
Solid Control and Precision Spin
String Project Hexa Pro has two strengths that work together. Control (9/10): the impact is solid and every shot goes where you aim it. Spin (9.5/10): it comes from the edges of the hexagonal profile, which grab the ball, and from snap-back. 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.
Solid by Construction
Hexa Pro's solidity comes from its construction: co-polyester with High-Density Polyester (HDC), treated with Alpha-olefins, gives it impact consistency and excellent mechanical durability. The hexagonal profile is not just aesthetic: every edge helps bite into the ball, with superior grip 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
- 230 g/mm
- String Stiffness Emulator
- 225 lb/in
- Static stiffness
- 0.98 kg/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-polyester composition (Soft Polyester + High-Density Polyester HDC). High-Density Polyester provides structural stiffness and durability, while Soft Polyester provides the softness that makes it Arm Friendly®. The Alpha-olefin treatment completes the profile, adding elasticity and protection against wear.
The manufacturing processes
Pre-Stretch
The pre-stretch of the core minimises tension loss and allows stringing at lower tensions.
Double Heating
The heat treatments remove internal stresses and any irregularities in the string, making it more uniform, flexible and elastic.
Liquid Wax
The string is finished with a layer of wax, which reduces wear, significantly extends its lifespan and makes stringing easier.
Low Friction
Reducing friction offers three advantages: less string movement, greater spin potential thanks to better 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 goes hand in hand: the impact is solid and 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 solid impact 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
Precision Spin
With 9.5/10 spin, Hexa Pro is among the most effective strings for generating rotation. The hexagonal profile bites into the ball and snap-back does the rest, producing heavy shots with curved, dipping trajectories.
- Spin 9.5/10
- Hexagonal profile for ball grip
- Effective 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 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 looking for a string that lasts
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-polyester (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. Added to this is snap-back (the string's return to position): together they generate 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®, with 8/10 comfort. Despite its hexagonal profile and performance orientation, its co-polyester 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 precision spin (9.5/10), ideal for those who build the point with precision. Rocket has a round profile and is more oriented towards power (9/10) with extreme spin (10/10), ideal for an explosive, aggressive game. Hexa Pro has greater dynamic stiffness (230 vs 225 g/mm) and superior tension maintenance (8/10 vs 7/10).