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Pacific

Tough Gut 16

Gut Gauge 16 1.39 mm In production

Lab measurements for Pacific Tough Gut 16, 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

107lb/in

lower = softer, kinder on the arm

Tension loss

21%

lower = stays where you strung it

Energy return

95%

higher = livelier, more free power

Spin potential

1.8

higher = more spin off the string bed

Ball bite

0.320COF

higher = grabs the ball harder

Snapback

0.180COF

lower = strings slide and snap back

How it ranks against all 789 strings

Stiffness 107 lb/in · 2nd pct

Stiffer than 2% of strings tested — exceptionally soft and forgiving.

Tension loss 21 % · 19th pct

Sheds more tension than 19% of strings tested.

Energy return 95 % · 96th pct

Livelier than 96% of strings tested — huge free power off the string bed.

Spin potential 1.8 · 1st pct

More spin potential than 1% of strings tested — minimal spin generation.

Ball bite 0.320 COF · 0th pct

Grips the ball harder than 0% of strings tested — slick against the ball.

Snapback 0.180 COF · 97th pct

More string-on-string friction than 97% of strings tested — notches badly and stays put.

Strings that play like this

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

Tecnifibre E-Matrix 16 96% match Babolat VS Natural ThermoGut 16 Touch 96% match Wilson Natural Gut 16 95% match Klip Armour Pro 16/1.30 94% match Tecnifibre X-One Biphase 18 93% match Wilson Natural Gut 17 93% match

More from Pacific

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 Tough Gut 16 against 789 strings Find the right string for me