Retenser® - Adjustable String Tensioner

Fresh‑string feel in one twist.

Key Benefits

• Instant re‑tension: Bring dead strings back to life in seconds with the supplied key, no restringing run‑around. 
• Fits almost any modern frame: Installs on the bridge during stringing (choose 3‑loop or 4‑loop version). ITF‑approved for tournament play. 
• Play stronger, longer: Restored tension boosts control, power and comfort while reducing the risk of arm strain. 
• Reusable & wallet‑friendly: Engineered to survive multiple string jobs, saves time and cuts stringing costs. 
• Feather‑light footprint: Adds only ≈ 5 g , less than 2 % of a typical racket’s mass, so balance stays true. 

What’s in the box

• 1 × Retenser body (select 3‑loop or 4‑loop)
• 1 × Cylinder set • Medium tension (+0 / +1 kg steps, total +2 kg)
• 1 × Adjustment key with lanyard

Why players love it

• Red Dot Award winner for “Most Innovative Sport Product” (2021) 
• Approved for all ITF‑sanctioned matches, take on any court with confidence. 
• Less downtime, more match time: extend string life and stay dialled‑in between restrings.