StringSpec
String finder

Browse all 789

IsoSpeed

Axon Mono 16L

Polyester Gauge 16L 1.28 mm In production

Lab measurements for IsoSpeed Axon Mono 16L, ranked against all 789 strings in the database. Every figure below is a testing-machine result at a fixed reference tension, not a playtest opinion.

Measured values

Stiffness

200lb/in

lower = softer, kinder on the arm

Tension loss

34%

lower = stays where you strung it

Energy return

89%

higher = livelier, more free power

Spin potential

3.2

higher = more spin off the string bed

Ball bite

0.383COF

higher = grabs the ball harder

Snapback

0.119COF

lower = strings slide and snap back

How it ranks against all 789 strings

Stiffness 200 lb/in · 68th pct

Stiffer than 68% of strings tested.

Tension loss 34 % · 57th pct

Sheds more tension than 57% of strings tested.

Energy return 89 % · 53rd pct

Livelier than 53% of strings tested.

Spin potential 3.2 · 13th pct

More spin potential than 13% of strings tested.

Ball bite 0.383 COF · 14th pct

Grips the ball harder than 14% of strings tested.

Snapback 0.119 COF · 82nd pct

More string-on-string friction than 82% of strings tested.

Strings that play like this

Closest matches across stiffness, tension loss, energy return and spin potential.

Gamma Zo Black Ice 18 (1.18) 89% match Gamma RZR Rx 16 89% match L-Tec Premium 5S 16L (1.25) 89% match Babolat Pro Hurricane 18 88% match Prince Beast XP 16 88% match Gamma Zo Black Ice 17 (1.23) 88% match

More from IsoSpeed

What these numbers mean

Stiffness · lb/in

How much the string bed resists deflection. Higher plays firmer and more controlled; lower plays softer and easier on the arm.

Tension loss · %

Share of the reference tension the string sheds under a fixed test protocol. Lower means the bed stays where you strung it for longer.

Energy return · %

Share of impact energy handed back to the ball. Higher plays livelier and more powerful.

Spin potential

Ball friction divided by string-on-string friction. Higher means better bite with a cleaner snapback, so more spin.

Ball bite · COF

String-on-ball friction. Higher grabs the ball harder through the brush.

Snapback · COF

String-on-string friction. Lower lets the mains slide and snap back into place after impact.

Compare Axon Mono 16L against 789 strings Find the right string for me