String Project Rocket, monofilament tennis string
String Project Rocket is an elastic, explosive Soft Polyester monofilament tennis string, designed for those seeking top-level power and spin without giving up comfort. Treated with Alpha-olefins and finished with Liquid Wax, it combines great elasticity with very high snap-back: it is the string for those who want to take command of the rally with heavy shots and aggressive spin.
- Soft Polyester Monofilament
- Gauges 1.25 · 1.30 mm
- Arm Friendly®
- Tension 18–24 kg
Playing profile
String Project Rocket offers top-of-the-category spin (10/10), which comes from its elasticity and very high snap-back, helped by the Liquid Wax finish. Power (9/10) is explosive and comes from the elasticity of Soft Polyester treated with Alpha-olefins. Arm Friendly® comfort (8.5/10) makes itself felt even in the most intense playing sessions.
- Spin10/10
- Power9/10
- Resilience9/10
- Comfort8.5/10
- Control7/10
- Tension7/10
Ratings and technical specifications measured in the laboratory by Pro-t-one (Eng. G. Medri) — laboratory test report 1.25 mm (PDF).
An explosive character on court
On court, Rocket stands out for its exuberant, dynamic character. It lets you exploit the intensity of shots and spin naturally, as if power were an always-available reserve. Topspin is facilitated and maximised: Rocket performs best with aggressive rotation, delivering heavy shots that drop quickly into the opponent's court. The ideal tension is around 21 kg, within the recommended range of 18–24 kg.
Extreme power and spin
Elastic and explosive, Rocket combines easy power with very high snap-back: this is where its spin (10/10) and powerful shots (9/10) come from.
- Spin 10/10
- High, fast snap-back
- Heavy shots with aggressive spin
- Elastic, explosive response
Arm Friendly® comfort
The softness of Soft Polyester, combined with multiple heat treatments, reduces the vibrations transmitted to the arm.
- Reduced vibrations to the arm
- Extended sessions with less fatigue
- Suitable for players of all ages
- Soft Polyester with heat treatments
Advanced technology for explosive performance
Rocket's manufacturing process, based on multiple heat treatments, gives the string great elasticity and a very fast return to position (snap-back). Its Soft Polyester composition, treated with Alpha-olefins, ensures superior softness and elasticity compared to traditional polyesters. The Liquid Wax finish increases snap-back: it is the combination of elasticity and snap-back that generates the 10/10 spin.
The manufacturing processes
Spring Load
It allows the molecular chains to contract repeatedly, with minimal tension loss and greater stability of properties over time.
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.
Technical data sheet
| Feature | Value |
|---|---|
| Type | Soft Polyester Monofilament (treated with Alpha-olefins, Liquid Wax finish) |
| Cross-section | Round |
| Gauges | 1.25 mm (16L) · 1.30 mm (16) |
| Dynamic stiffness | 225 g/mm |
| Static stiffness | 0.72 kg/mm |
| Manufacturing processes | Spring Load, Double Heating, Liquid Wax, Low Friction |
| Recommended tension | 18–24 kg (ideal around 21 kg) |
The right string if you see yourself here
Amateurs
Those looking for easy drive and spin, finding in Rocket an ally for more effective shots with less effort. Recommended gauge: 1.25 mm for maximum elasticity.
Competitors
Those looking for a weapon with excellent ball launch and the ability to impart heavy, aggressive spin, ideal for a game built on spin and power.
Players with powerful racquets
Those with already-powerful frames can opt for the 1.30 mm gauge, which offers greater control and durability, balancing the string's exuberance.