Gear Library
Kirschbaum Pro Line II — product photograph from Holabird Sports (authorised retailer)Image: Holabird Sports (authorised retailer)
Stringperformance tier

Kirschbaum Pro Line II

Polyester · 1.20 mm/1.25 mm/1.30 mm · Firm · 20–25 kg

polyester · 1.20 mm / 1.25 mm / 1.30 mm · firm

Who it is for

Advancing and competitive players looking for polyester with a firm response.

Why it works

Kirschbaum Pro Line II is a co-polyester string in 1.20 mm and 1.25 mm and 1.30 mm; the round profile gives it a predictable, even string bed.

Watch-outs

Polyester loses tension quickly and is harsh on sensitive arms — restring regularly and drop tension rather than pushing it.

Strengths

  • Firm, controlled response
  • Predictable string bed

Trade-offs

  • Tension drops with use
  • Gauge changes feel; try one step either way

Compatible player profiles

  • Advanced swing speeds
  • Competitive swing speeds
  • Control-first hitters
  • String breakers