String Project Rocket, monofilament tennis string
String Project Rocket is a Soft Polyester monofilament tennis string designed for those seeking maximum power and maximum spin without giving up comfort. Treated with Alpha-olefins and finished with Liquid Wax, Rocket delivers an explosive, lively playing experience. Elastic, grippy and responsive, it is the benchmark for those who want to dominate 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), thanks to its pronounced snap-back and high-grip Liquid Wax surface. Power (9/10) is explosive and responsive, fuelled by the exceptional elasticity of Soft Polyester treated with Alpha-olefins. Arm Friendly® comfort (8.5/10) ensures arm protection even during 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
Rocket delivers an explosive, responsive playing experience, with a pronounced snap-back behind its extraordinary spin generation (10/10) and powerful shots.
- Spin 10/10, top of the category
- Pronounced, fast snap-back
- Heavy shots with aggressive spin
- Direct, communicative feel
Arm Friendly® comfort
Despite its high performance, Rocket is an Arm Friendly® (comfort 8.5/10) monofilament. The softness of Soft Polyester, combined with multiple heat treatments, reduces vibrations transmitted to the arm.
- Reduced arm vibrations
- Extended sessions without fatigue
- Suitable for players of all ages
- Soft Polyester with heat treatments
Advanced technology for explosive performance
Rocket's unique manufacturing process, based on multiple heat treatments, gives the string exceptional 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 creates a high-grip surface that amplifies grip on the ball.
The manufacturing processes
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.
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.
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 |
| 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 extraordinary ability to impart complex spin, ideal for a game of spin and variations.
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.