



Everything in the Standard, plus:
Precision tension control for players who take their equipment and their game seriously.
1. CHOOSE YOUR VERSION - COUNT THE LOOPS AT YOUR RACKET'S BRIDGE
Flip your racket over and look at the curved bottom section (the bridge).
Count the string loops passing through it - you'll see either 3 or 4.
Select the matching version below. Not sure?
If you pay attention to the details that make the difference — your string type, your tension preferences, how surface and temperature affect your game — the Retenser Pro is built for you.
Where the Standard gives you one level of tension restoration, the Pro gives you three. Swap between soft, medium, and hard cylinders to dial in exactly the right amount of tension for that day's conditions, that surface, that opponent. On a fast indoor court, you might want maximum control — reach for the orange cylinders. On a cold, heavy clay day, the blue cylinders let you soften the response and get more from the ball without extra effort.
This is the level of control that until now only touring professionals could get from their stringing team — on demand, on court, in seconds. The Retenser Pro puts it in your hands.
Everything in the Standard, plus:
The Retenser Pro is the right choice if you:
Choose the right cylinder for your conditions and dial in your ideal tension.
+0.5 kg / +1 kg total.
Fine-tune feel. Best when strings are recently strung and just need subtle adjustment.
+1 kg / +2 kg total.
The everyday choice. Restores tension after regular play and natural string relaxation.
+1.5 kg / +3 kg total.
Maximum restoration after significant tension loss or when playing in cold conditions.
| FEATURE | STANDARD | PRO |
|---|---|---|
| Cylinder sets | 1 (medium) | 3 (soft / medium / hard) |
| Tension range | up to +2 kg | up to +3 kg (customisable) |
| Adjustment keys | 1 | 2 |
| Storage pouch | – | check |
| ITF approved | check | check |
| Reusable | check | check |