Top Tennis Strings
Gauge: thicker lasts, thinner bites
Gauge is string diameter. Small changes affect durability, spin and feel.
Diadem firstBuy Diadem direct from Big NC
Diadem string at Diadem's own prices: Flash $9.95 set · $149.95 reel. Contact us and we'll send you a payment link. All our stringing and string sales live at Mobile Racket.
| US gauge | About | Tradeoff | Example |
|---|---|---|---|
| 15L | 1.35 to 1.40 mm | Very durable, less bite | |
| 16 | 1.30 mm | Durability-first club default | X-One 16 |
| 16L | 1.25 to 1.28 mm | Balance of life and spin | Hyper-G 16L, ALU 1.25 |
| 17 | 1.20 to 1.25 mm | More spin and feel, shorter life | NXT 17, RPM 17 |
| 18 | 1.10 to 1.20 mm | Max feel and bite, breaks sooner | Poly Tour Pro 18 |
Look at the mm on the pack. Brands label gauge differently.
Use it like this
- Breaking often? Go thicker, or poly mains.
- Want more spin or pocket? Go thinner, same string.
- Sore arm? Gauge will not fix a harsh poly. Change family.
- Hybrids: tell your stringer each gauge.
Amazon is another option; those buttons are affiliate links. Details
Shop by gauge
Diadem pickDiadem Flash Poly · 4.0/4
Breaking strings too fast? A round Diadem poly that lasts, without going to a 15L. Best for: frequent breakers.
Is 16L the same as 1.25?
Often close, not identical. Look at the mm on the pack.
Should juniors use thicker string?
Comfort and swing speed matter more. Many juniors do well with a multi in a mid gauge.
Want it strung for you? Mobile Racket does pick-up and drop-off restrings in Wake and Harnett Counties, NC. Bring your own sealed set for $25. How it works.