Test with real customers
Use three sets of each selected string across different playing styles, racquets and tensions—not just one isolated test.
Click the image to enlarge
★ BUILT FOR SERIOUS STRINGERS
START DISCOVERING YOUR BEST-SELLING STRINGS →
Discover your best-selling strings before investing in reels.
★★★★★
Playtest 24 premium YTEX string sets with real customers, identify the setups they ask for again and build a smarter reel inventory with far less risk.
★★★★★
Trusted by stringers, coaches and pro shops in 50+ countries
$425 value
$199
SAVE $226
PRO Kit bonuses included
$75 YTEX Gift Card • 2 Logo Stencils • 1 Court Fence Banner
✓ Secure checkout
✓ Fast U.S. shipping
✓ Satisfaction guaranteed
24Premium String Sets
8Performance Profiles
3×Each String in the Kit
$75YTEX Gift Card
2Logo Stencils
1Court Fence Banner
WHY PROFESSIONAL STRINGERS CHOOSE IT
Do not buy reels based on descriptions. Buy them based on demand.
Finding the right string should not require purchasing eight full reels. The PRO Kit gives you enough inventory to test the complete lineup with multiple players and identify the strings that deserve permanent space on your shelf.
Recommend with confidence
Match spin, comfort, control, durability, power and feel to the needs of each player with firsthand experience.
Stock only proven winners
Avoid expensive inventory mistakes by purchasing reels only after your customers have shown you what they prefer.
THE PROFESSIONAL PLAYTEST PROCESS
From sample kit to repeat business.
The PRO Kit gives you a clear path from testing to confident reel purchases.
Receive the PRO Kit
Start with 24 full sets covering eight performance profiles.
String customer racquets
Test across different racquets, tensions, playing styles and skill levels.
Collect feedback
Track spin, comfort, control, power, feel, durability and reorder interest.
Identify the winners
See which strings repeatedly perform well and earn customer demand.
Order reels confidently
Invest in proven inventory and build repeat stringing business.
MORE THAN A SAMPLE KIT
Turn playtesting into repeat business.
The PRO Kit is designed for stringers who want to build reliable recommendations—not simply collect samples. Each customer test gives you information you can use on future racquets.
- Learn which strings work best for different player profiles.
- Build trusted setup recommendations for your customers.
- Reduce the risk of buying reels that sit unused.
- Create repeat orders from players who discover their ideal setup.
WHAT IS INCLUDED
Eight strings. Three sets each. Twenty-four opportunities.
A professional assortment covering the performance needs stringers encounter every day.
#1 SPIN • FLAGSHIP
3 SETS
Quadro Twist
Top Spin + ComfortFlagship soft co-poly with exceptional spin, feel and an arm-friendly response.
View Quadro Twist →MAXIMUM SPIN
3 SETS
Square-X Sharp
Maximum Ball BiteThin, sharp-edged co-poly built for aggressive spin and exceptional rotation.
View Square-X Sharp →TOUR CONTROL
3 SETS
Hexagon-X
Control + DurabilitySix-sided co-poly offering precise control, dependable spin and lasting performance.
View Hexagon-X →ALL-AROUND PERFORMANCE
3 SETS
ProTour
Power + Control + FeelBalanced round soft co-poly with power, control, tension stability and feel.
View ProTour →SPIN + CONTROL
3 SETS
Triangle Twisted
Power + SpinTwisted triangular profile providing ball bite, power and directional control.
View Triangle Twisted →COMFORTABLE SHAPED POLY
3 SETS
Square-X
Controlled Power + SpinSoft square-profile co-poly with ball pocketing, snapback and dependable control.
View Square-X →POWER + DURABILITY
3 SETS
Penta Power
Controlled PowerDurable five-sided string for frequent hitters seeking power and control.
View Penta Power →FEEL + COMFORT
3 SETS
Pro-Feel
Touch + ComfortSofter performance string for players prioritizing touch, feel and comfort.
View Pro-Feel →
WHY THREE SETS OF EACH?
One test creates an opinion. Three tests reveal a pattern.
Test 1Feel the string in a real customer setup.
Test 2Compare it with another racquet, tension or playing style.
Test 3Confirm whether it belongs in your reel inventory.
THE BUSINESS CASE
The kit does not need to create hundreds of new customers to pay off.
One avoided inventory mistake—or a handful of repeat string jobs from players who find their ideal setup—can offset much of the kit's cost.
A player discovers the right string
The setup performs better and strengthens confidence in your recommendation.
The player returns for the same setup
Successful playtests become repeat string jobs instead of one-time transactions.
You stock only proven demand
Your reel purchases are supported by customer feedback instead of guesswork.
REDUCE INVENTORY RISK
Buying reels immediately vs. testing with the PRO Kit.
| Decision | Buying Reels Immediately | 24-String PRO Kit |
|---|---|---|
| Test all eight profiles | ✕ Expensive | ✓ Included |
| Test with multiple players | ✕ Requires several reels | ✓ Three sets each |
| Risk of buying the wrong inventory | High | Much lower |
| Customer feedback before purchase | Limited | Extensive |
| Ability to build proven recommendations | Slower | Faster |
Spin Rating
Quadro Twist was ranked #1 for spin by the USRSA.
Overall Rating
Quadro Twist was ranked #2 overall among more than 200 strings tested.
Verified Reviews
Backed by hundreds of verified YTEX customer reviews.
Five-Star Ratings
More than 96% of verified reviewers awarded YTEX five stars.
DESIGNED FOR TENNIS PROFESSIONALS
Who is the PRO Kit for?
Independent Stringers
Build stronger recommendations and identify the strings your customers will request again.
Pro Shops & Clubs
Evaluate the lineup before committing valuable shelf space and cash to full reels.
Coaches & Academies
Test setups across different players and recommend strings based on actual on-court feedback.
★★★★★
“The smartest part of the three-set format is the ability to test each string with more than one player. Instead of buying reels based only on descriptions, a professional stringer can compare real customer feedback and stock the strings most likely to move.”
CHOOSE YOUR LEVEL
Evaluation kit or professional business kit?
8-String Stringers Kit
$79
- 8 total string sets
- 1 set of each selected string
- Best for an initial introduction
- Includes a $30 YTEX Gift Card
24-String PRO Kit
$199
- 24 total string sets
- 3 sets of each selected string
- Test with multiple customers
- $75 Gift Card + 2 Stencils + Court Banner
FREQUENTLY ASKED QUESTIONS
Everything you need to know.
Exactly what comes in the PRO Kit?
The kit contains 24 full tennis-string sets: three sets each of Quadro Twist, Square-X Sharp, Hexagon-X, ProTour, Triangle Twisted, Square-X, Penta Power and Pro-Feel. It also includes a $75 YTEX Gift Card, two logo stencils and one court fence banner.
Why are there three sets of each string?
A single playtest can be influenced by the player, racquet or tension. Three sets allow you to compare feedback across multiple customers and make a more reliable decision before buying a reel.
Is this kit only for certified stringers?
No. It is ideal for independent stringers, coaches, clubs, academies and pro shops that regularly recommend or install tennis strings.
Can the strings be used in hybrid setups?
Yes. The lineup gives you several shaped and round co-polys that can be tested as full beds or combined in hybrids based on the player's needs.
How should I track player feedback?
Record the racquet, tension, setup, playing style and the player's comments on spin, comfort, control, power, durability and feel. Patterns will quickly reveal which reels make sense for your business.
How can I use the $75 gift card?
Apply the gift card toward a future YTEX order after you have identified the strings your customers prefer.
What should I do after identifying the winning strings?
Purchase reels of the strings your customers prefer and use the results to make more confident recommendations on future string jobs.
BUILD A SMARTER STRING INVENTORY
Do not spend hundreds on reels before you know what your players actually want.
Playtest 24 full sets. Compare real feedback. Identify the winners. Invest in reels with confidence.
GET MY 24-STRING PRO KIT →✓ Secure checkout ✓ Fast U.S. shipping ✓ Professional playtest value
24-String PRO Kit$199
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